This weekly roundup covers the FBI's attribution of the $6 billion Binance hack to North Korea, a spreading wave of refrigeration attacks that has now reached France's blood supply, rapid exploitation of a freshly patched WordPress flaw, a Europol takedown of a fake trading platform supplier, and unauthorized trades in Stockal customer accounts.  Two threads run through this week's stories. First, attackers are increasingly coming in through someone else's door: a third-party refrigeration supplier, a scam platform provider, or data leaked by another company. Second, speed decides the outcome. Attackers moved on WordPress within two days of a patch, while fast alarms saved France's blood stocks from the fate of supermarket food. 

The Cyber Express Weekly Roundup 

FBI Blames North Korea for $6B Binance Hack 

The FBI has attributed the theft of more than $6 billion from Binance, which took place around October 29, to North Korean hackers it tracks as "TraderTraitor." The stolen funds are being converted mainly into Ethereum, and the agency has urged crypto firms to block transactions linked to the attackers. Read more… 

Hackers Heat Supermarket Freezers Across Europe 

Supermarkets in Sweden, Belgium, Luxembourg, Ireland and Estonia threw out spoiled food after hackers took control of refrigeration systems, in some cases setting them to 50°C. The attacks follow a similar campaign against around 400 stores in France last month that exploited outdated, internet-connected cooling equipment. Who is responsible remains unknown. Read more… 

Hackers Target WordPress Flaw Days After Patch 

Attackers began exploiting a critical WordPress flaw within 48 hours of its October 28 fix in version 7.1.4, with Wordfence blocking nearly 63,000 attempts in a single day. The bug affects versions 4.7 through 7.1.3 and can let hackers run code on a site during a core update. With no workaround available, site owners are urged to update immediately. Read more… 

Europol Busts Supplier of Fake Trading Platforms 

Authorities in seven countries seized more than 100 servers and arrested seven suspects on November 3 in an operation against a company accused of supplying fake trading platforms to scam call centres. Victims were lured with promises of quick profits, shown fake gains to draw in more money, and then blocked from withdrawing. Losses are estimated at over €4 million, with potential victims in more than 50 countries. Read more… 

Freezer Hackers Hit France's Blood Supply 

France's national blood service, EFS, said hackers raised temperatures in cold storage rooms at three sites by going through a third-party refrigeration supplier. Alarms caught the changes quickly, and no blood products were lost. It is the first healthcare organisation hit in a wave of refrigeration attacks now reported in at least 11 countries. No one has claimed responsibility. Read more… 

Stockal Confirms Unauthorized Trades in 13 Accounts 

Borderless, which runs US equities platform Stockal, said attackers logged into 26 customer accounts using valid credentials and, in 13 of them, sold large-cap stocks to buy obscure microcap shares. No funds were withdrawn. The company says its systems were not breached and suspects social engineering using data leaked in another firm's breach. Read more… 

Weekly Cybersecurity Takeaway

Several of this week's incidents show that an organization's security is only as strong as the partners and data around it. Supermarkets and France's blood service were reached through refrigeration suppliers; Stockal customers were likely targeted with data stolen elsewhere, and the Europol case exposed a business that built scam platforms for others to run.  Speed is the other lesson. Attackers turned the WordPress fix into a roadmap within 48 hours, while the EFS avoided losses because its monitoring flagged the problem right away.  Organizations should review the remote access their suppliers have to critical systems, retire or isolate unsupported internet-connected devices, and make sure alarms on physical equipment reach someone around the clock. They should also patch critical flaws without delay, strengthen account authentication, and, for crypto firms, block addresses linked to the Binance attackers. 

Borderless, the company that runs the US equities trading platform Stockal, has issued a statement responding to recent reports of a Stockal cyberattack in which unauthorized trades were placed in several customer accounts. The firm said it wanted to set out the facts and explain how it is assisting the customers who were affected.  According to Borderless, its US brokerage and custody partner, DriveWealth, flagged unauthorized trading in 13 customer accounts on October 16 (India time), which was October 15 during US market hours. Access to those accounts was restricted shortly afterwards to stop any further activity.  The company said an unauthorized third party appears to have logged into 26 customer accounts using valid credentials. In 13 of them, existing large-cap US equity holdings were sold, and the proceeds were used to buy thinly traded microcap securities. Borderless said its investigation so far shows that no funds were withdrawn. 

No Breach of Borderless Systems Found 

Borderless stated that it has found no evidence that its platform, interface, infrastructure or internal systems were breached or compromised in the cyberattack on Stockal. It has brought in independent cybersecurity specialists to examine its systems.  The company believes the account holders may have been targeted through a social engineering attack that used information exposed in another company's data breach several weeks earlier. However, it stressed that this link remains unconfirmed and under active investigation. 

Support for Customers Hit by the Stockal Cyberattack

Borderless called support for affected customers its immediate priority. Its teams have been in direct contact with them since shortly after the incident and are working with DriveWealth to establish the facts, review the transactions and explore "appropriate avenues for a fair resolution."  The company noted that this help is offered in good faith and "does not constitute an admission of liability, wrongdoing, negligence or responsibility for the unauthorized activity." It added that it will keep supporting customers while the facts and respective responsibilities are established. 

New Safeguards After the Stockal Cyberattack 

As a precaution, Borderless has introduced additional authentication and account-protection measures. Based on the information reviewed so far, it said the unauthorized trading identified was limited to the 13 accounts. It has found no evidence of threats to the wider Borderless platform, its other products or other customer accounts, and it continues to monitor its systems as the investigation progresses. 

Cooperation With Authorities 

Borderless said it is cooperating with relevant authorities and regulators over the Stockal cyberattack. It also clarified that it had responded substantively to media enquiries before reports were published, sharing the information it had at the time. The company said its statement reflects its current understanding and may be updated as further facts emerge.  The firm said transparency, accountability, and protecting customers' interests remain central to how it operates. It added that it built Borderless on the belief that customers deserve "a trusted, responsible & globally connected financial platform," and that it will keep communicating as verified information about the cyberattack on Stockal becomes available. 

Singapore Airlines (SIA) is the newest name on a growing list of carriers affected by the Amadeus cybersecurity incident, confirming that Amadeus IT Group, the global travel technology provider, accessed roughly 46,000 of its booking records through its systems.   The disclosure adds to a wave of airline cyberattacks that has now hit at least 15 carriers across Asia, Europe and Australia, and it highlights how cyberattacks on airlines reach passengers through shared third-party platforms rather than airlines' own networks. 

What Singapore Airlines Disclosed About the Amadeus Cybersecurity Incident 

SIA briefed the media on 3 November 2026. According to the airline, most of the affected records contained passengers' names, booking reference numbers, travel itineraries and booking classes.  A smaller group of about 620 records carried more sensitive details. For these, email addresses, phone numbers, travel document information and KrisFlyer membership numbers may also have been viewed.  The airline said no bank account or credit card data was exposed and no bookings were altered. SIA also stated that its own IT systems were not breached. It is reaching out directly to affected customers who have upcoming trips so they can change their booking reference numbers. 

Cathay Pacific: 53,000 Bookings Accessed Over Three Years 

Cathay Pacific went public with its own statement on 30 October 2026, updated at 16:11 HKT (GMT+8) that day. The Hong Kong carrier said Amadeus first notified it on 28 October 2026 and shared further details on 29 October.  According to Cathay, an unauthorized party had gained access to travel reservation data in Amadeus's systems "using login credentials assigned to its system account." Data supplied by Amadeus showed that around 53,000 Cathay Pacific bookings were affected, with the unauthorized access running from August 2023 to September 2026.  In most cases, the exposed information covers booking references, passenger names, and flight details. In a smaller subset, email and phone contacts, travel document details, and frequent flyer numbers may also have been accessed. Cathay said there is no evidence that financial or payment data was touched.  The airline said Amadeus has contained the incident, including through a password reset, and has added enhanced monitoring and detection on its systems. Amadeus has so far found no evidence that the data has been misused.  Cathay stressed that the incident "has not impacted and is not impacting" its own systems or operations. It has informed the relevant authorities that they are still analyzing the information from Amadeus and plans to notify affected customers individually once the details are confirmed. "We apologise to our customers for the concern and inconvenience caused by this incident," the airline said. 

Malaysia Airlines Urges Vigilance 

Malaysia Airlines issued its notice on 31 October 2026, describing Amadeus as its third-party airline reservation technology provider. The carrier said some customer information processed through Amadeus between August 2023, and September 2026 may have been affected.  The airline said its own IT systems were not compromised and that there is currently no evidence that financial information was accessed. It is working with Amadeus and other relevant parties to investigate and gauge the impact.  As a precaution, Malaysia Airlines asked customers to stay alert to suspicious or unsolicited messages, "particularly those requesting personal or financial information." The carrier said it would share further updates as more information emerges. 

Japanese and Korean Carriers Report Similar Airline Cyberattacks 

Japan Airlines (JAL) reported earlier that Amadeus had informed it of unauthorized access to reservation records for both JAL and Japan Transocean Air flights. About 92,000 customers were affected, making JAL the hardest-hit carrier so far. Names, booking references, and flight information were exposed.  Korean Air and Asiana Airlines also confirmed unauthorized access to data managed by Amadeus. Both said there was no evidence that their internal systems or databases had been breached. 

How Amadeus Explains the Breach 

Amadeus has attributed the exposure to a software glitch that made certain booking-display data accessible. That explanation sits alongside Cathay Pacific's account, which describes an unauthorized party using system account login credentials.  The company said its investigation is continuing and that it has found no evidence of payment or financial information was accessed. Amadeus also said there is no sign that the vulnerability was used for ransomware. It has since rolled out fixes, together with stronger monitoring and detection measures. 

The Full Reach of These Cyberattacks on Airlines 

At least 15 international airlines are either confirmed as directly affected or are investigating possible customer data exposure from the supply-chain attack on the Spanish IT and reservations company. Because the breach hit a centralized booking display environment, it reached flag carriers as well as the regional partners that route reservations through them. 

Major carriers with confirmed exposure 

Airline	Reported impact
Japan Airlines (JAL)	About 92,000 passenger records
Cathay Pacific Airways	About 53,000 passenger bookings
Singapore Airlines (SIA)	About 46,000 booking records
All Nippon Airways (ANA)	Up to 37,800 customer profiles
Malaysia Airlines	Customer data exposed across August 2023 to September 2026
Korean Air	Unauthorised access to customer reservation databases
Asiana Airlines	Passenger booking references exposed through system account credentials
Condor Airlines	Part of the German leisure carrier's international flight data accessed

 

Regional and subsidiary carriers 

Several smaller airlines were drawn in because they share back-end ticketing technology or corporate ties with the larger groups: 

Airline	Link to the breach
Japan Transocean Air (JTA)	Affected through parent company Japan Airlines
Air Do	Affected through shared system pathways with ANA
StarFlyer	Affected through shared system pathways with ANA
Solaseed Air	Affected through shared system pathways with ANA
Ibex Airlines	Still determining the scope of exposure via its ANA integration
Oriental Air Bridge	Still determining the scope of exposure via its ANA integration

Under investigation 

Qantas Airways is formally investigating whether any Australian customer files were compromised. The airline maintains that its internal databases have not been breached. 

What the Amadeus Cybersecurity Incident Means for Travelers? 

With the access window stretching from August 2023 to September 2026, the Amadeus cybersecurity incident spans more than three years and stands out among airline cyberattacks for how many carriers it touched through a single provider. None of the affected carriers has reported misuse of the data so far, and no airline has said payment details were taken.   Even so, names, itineraries and booking references can be enough for convincing phishing attempts. That is why carriers such as Malaysia Airlines and SIA are asking passengers to watch for suspicious messages and, where advised, change their booking references.   As investigations continue, more airlines may update their figures on how far these cyberattacks on airlines have reached. 

Until this week, the wave of refrigeration cyberattacks sweeping Europe looked like a supermarket problem. That changed when France's national blood service confirmed that temperature controls had been altered at three of its sites. Blood products stored for hospitals were suddenly at risk, and the attackers had not even targeted the organisation directly. The Établissement Français du Sang (EFS) said "temperature and defrosting thresholds were raised to very high levels" in its cold storage rooms. These rooms hold blood products at preparation and distribution sites before they go to healthcare facilities, along with samples for biobanks. The outcome was far better than in the supermarkets. "No health impacts have been identified and no losses of blood products have been reported," the EFS said in a statement on Tuesday.

How the Refrigeration Cyberattacks Reached Blood Storage

The EFS says it was not targeted directly. Like many of the affected retailers, it says the attack reached it through a third-party provider of refrigeration equipment. That detail explains why a blood service ended up on the same list as supermarkets. If attackers can get into a shared supplier's systems, any organisation using that equipment may be exposed, whatever its sector. This is the first reported case in France in the second wave of attacks on control systems, and the first reported to affect a healthcare organisation.

Why the Blood Supply Survived When Food Did Not

The difference came down to how quickly someone noticed. "The EFS's monitoring and alarm systems enabled the rapid identification of these anomalies and the implementation of necessary measures to ensure that no blood samples or products were compromised," the organisation said. Depending on the situation, affected equipment was either brought under control without impacting the products, or shut down. Products in the affected cold rooms were moved to other facilities as a precaution. Compare that with the first wave in France in October. Attackers remotely defrosted fridges in hundreds of supermarkets, reportedly by triggering a forced defrost option, and pushed temperatures as high as 50 degrees Celsius. They struck while stores were closed, so the heat went unnoticed for hours. Tonnes of food perished, some equipment melted, and in some stores the heat sparked fires. Reporting on that wave found the attackers had targeted ageing, internet-connected devices still online years after their manufacturer stopped supporting them.

How Far the Refrigeration Cyberattacks Have Spread

The second wave is wider than the first. Businesses in at least 11 countries have reportedly been affected: Belgium, Estonia, Finland, France, Germany, Ireland, Luxembourg, the Netherlands, Portugal, Sweden and the United Kingdom. Earlier this week, supermarket chains in Sweden, Belgium, Luxembourg, Ireland and Estonia reported fridges and freezers set to high temperatures, with several discarding food. In Estonia, where the intrusion was caught within minutes, there was no significant damage.

Who Is Behind It?

No one knows for sure, and no group or entity has claimed responsibility for the attacks. It is also unclear whether the same people are behind both waves. Rumours have spread online that two Russian hacktivists groups, Noname057(16) and Z-Pentest Alliance, posted that they had hacked Danfoss. That led to speculation that they were behind the freezer attacks. Analysts now question whether that claim means they were responsible. Russian groups have not been ruled out. However, experts say Iranian hacktivists, nation-state hackers, or even teenagers pulling pranks could also be the culprits.

A French Bank Reports a Separate Attack

In the same week, Crédit Mutuel Arkéa in northwestern France said it had halted some services after a cyberattack enabled fraudulent transactions. Nothing in the bank's statements links the incident to the refrigeration attacks. However, the bank describes a similar entry point: attackers "used the platform of one of our service providers" to reach the bank directly. The bank said attackers used its own account, not customer accounts, to make transactions to other banks. That potentially let them convert the money into cryptocurrency through specialised platforms. It denied press reports that the attackers got in through its subsidiary Fortuneo, and said human error was not the cause. Asked whether 118 million euros was stolen, the bank said it could not confirm the figure and could "only validate the order of magnitude." Some funds have been frozen and recovery efforts are under way. The bank says the losses will not threaten its financial stability and that customers' assets were not affected, apart from delays to some transfers. Almost all operations have resumed. The bank has also warned customers about a likely rise in phishing attempts, urging them never to share passwords, card numbers or SMS validation codes. The refrigeration attacks and the bank attack have not been tied to the same attackers. What they share is the route in. In both cases, the organisations say they were reached through an outside provider rather than through their own systems. Neither the blood service nor the bank was the first door the attackers opened.

The University of Texas at Arlington is investigating a cybersecurity incident that may have involved unauthorized activity in some of its information technology systems. The suspected UTA cyberattack came to light Thursday, when the university sent a notice to students and employees about the situation.  According to the notice, the incident has affected MachForms, an online form platform the university uses for several purposes, including event registrations, inquiries from prospective students, service requests, and surveys.  The university said it is still working to determine whether the UTA cyberattack has spread to other university systems or disrupted additional operations. 

Timeline of the UTA cyberattack  

Problems first appeared on Oct. 27, when MachForms became temporarily unavailable, according to the university's cybersecurity website. Technicians from the Office of Information Technology began investigating the issue at that time. On Wednesday, the office started corrective measures aimed at restoring services as soon as possible.  Since then, public information has been limited. As of Tuesday night, the cybersecurity website had not posted any updates since Thursday. 

What the University of Texas Is Asking Students and Employees to Do 

The university's email outlined several steps for students and staff to follow while the investigation into the cyberattack on UTA continues.  First, the university asked everyone to follow official guidance from the Office of Information Technology and the Information Security Office, and to pay close attention to university communications.  Second, anyone who notices suspicious activity, such as unusual computer behavior, a suspicious email or anything else that raises cybersecurity concerns, should report it to the Information Security Office at opsec@uta.edu.  Third, students and employees were told not to investigate the incident on their own or circulate unverified information. Questions should be directed to a department head or the Office of Information Technology, and people should rely on official updates for confirmed information. If a journalist reaches out, students and employees are asked to refer them to UTA's media relations team.  Finally, the notice asked the campus community to follow any additional instructions. If action involving passwords, devices, systems, or work practices becomes necessary, students and employees will receive specific guidance through official university channels.  MachForms remains affected for now. Students and employees who need access to the platform for urgent and significant operational needs can contact the Office of Information Technology service desk at uta.edu/help.  The University of Texas at Arlington has not said how long the investigation will take or when full service will be restored. 

Polymarket users who had the site open during a short window on October 29 watched their positions get sold and their funds leave their wallets without doing anything themselves. The Polymarket hack did not start inside Polymarket.

It came through a small piece of code from an outside company that loaded on every visit to polymarket.com. The cryptocurrency-based prediction market now says it is returning $3.9 million to affected traders.

How the Polymarket Hack Worked

In a post-mortem published on October 31, Polymarket said a third-party vendor whose performance-monitoring script ran on polymarket.com had been compromised. The attacker swapped the vendor’s legitimate code for a compromised script built specifically to target Polymarket users.

The attacker did not need anyone’s password. For users who had the site open at the time, the malicious script used their active session to sell positions and move funds out of their wallets. Anyone logged in and browsing during that window was exposed. The vendor has publicly confirmed the compromise.

Polymarket’s status page first reported “unauthorized activity affecting user wallets” on October 29 and marked the incident as resolved later that day.

Who Was the Vendor Behind the Polymarket Hack?

Performance-monitoring company DebugBear released its own update on the incident. It said its initial findings point to its domain registrar as the point of entry.

“Our DNS records were compromised through our domain registrar,” the company said on X. “We are currently unable to receive emails sent to our domain. Based on our initial investigation this attack targeted the website of a specific customer.”

[caption id="attachment_115172" align="aligncenter" width="538"] Source- Twitter[/caption]

DebugBear added that it has “not seen any indication of a compromise of our internal systems,” though it is continuing to investigate.

This is the part of the story that should worry other website operators. According to the statements from both companies, the attacker appears to have gone after a vendor’s domain setup rather than Polymarket’s own systems, and used that position to put malicious code in front of Polymarket’s users. DebugBear’s own internal systems, by its account, show no sign of being breached.

How Polymarket Responded

Polymarket listed the steps it took once the attack was identified:

• Removed the vendor’s compromised script and cleared every cache.
• Paused trading and its relayer to stop further drains, then reopened once the site was clean.
• Reset all active login sessions.
• Began redeploying third-party scripts with added integrity controls and continuous monitoring, including a stronger content security policy, explicit version pinning and sandboxing.
• Referred the case to law enforcement while running its own investigation into the threat actor.

The trading pause stopped the bleeding, but it created a second set of losses for traders who were not directly hit by the script.

Where the Polymarket Hack Refunds Stand

Polymarket is returning $3.9 million in total. Of that, $2.7 million covers the initial losses from the attack, and $1.2 million covers losses tied to the hours-long shutdown.

As of its post-mortem, the company said 95% of affected wallets had been refunded in full, through a mix of reimbursements for drained wallets and goodwill payments.

The refunds cover more than drained wallets. Polymarket said it also made goodwill payments in two cases:

• Positions taken during the attack. If the script moved or force-sold a user’s positions, Polymarket will pay what they were worth when they were taken, including any slippage from the sale.
• Losses during the trading pause. If a user held a position when trading paused and it lost value because the market ended during the pause, or the user sold right after trading reopened, Polymarket covered the difference from its value at the pause.

Users do not need to file claims or tickets. Polymarket said it identified eligible wallets using on-chain and trading data. Anyone who thinks their amount is wrong, or believes they should have received a payment, can submit a form for the company to recheck.

What Remains Unanswered

Some questions are still open. Neither company has named the threat actor. DebugBear has said the attack targeted a single customer, but its investigation is ongoing, and it still cannot receive email sent to its domain. Polymarket has also not said exactly how many wallets were affected, only that 95% have been made whole.

The incident shows how much trust a website places in every outside script it loads. Polymarket’s own systems were not the entry point, yet its users still lost money, and it took a trading halt, a session reset and a removal of the vendor’s code to stop it.

Supermarkets in Sweden, Belgium, Luxembourg, Ireland and Estonia were throwing out spoiled food on Monday after their fridges and freezers stopped doing their job. In at least two cases, temperatures had been pushed to 50 degrees Celsius (122 degrees Fahrenheit). The apparent supermarket cyberattack came only weeks after attackers took control of cooling equipment in hundreds of stores across France. That raises an obvious question: why are supermarket freezers suddenly a target, and why now?

How the Supermarket Cyberattack Unfolded Across Europe

Sweden saw some of the clearest signs of tampering. ICA Group spokesperson Gustaf Nilsson told the TT news agency that "a limited number" of stores were affected overnight by an incident involving refrigeration systems. One ICA Kvantum store in Sjöbo, in southern Sweden, was more direct. In a Facebook post, it said its fridges and freezers had been hacked and set to 50 degrees Celsius, and that staff were discarding affected products. The Coop chain also reported problems with fridges and freezers at six stores in central Sweden, according to TT, though it did not immediately share details. In Belgium, Delhaize said an "IT incident" had affected refrigeration in several dozen stores, mostly in Belgium and a few in neighbouring Luxembourg. "In the affected stores, the range of fresh and frozen products is temporarily somewhat limited. Our distribution centers are operating normally, and there has been no disruption to deliveries to our stores," spokesperson Sarah De Meester said. Carrefour said a cyberattack targeting refrigeration had affected 15 of its more than 700 Belgian stores, and described the impact as "extremely limited. In Ireland, Musgrave Group said refrigeration systems in 13 SuperValu stores were affected by the "cyber incident." Chilled and frozen products were removed from sale as a precaution. By Monday afternoon, the company said the incident had been "fully resolved" and that restocking of chilled and frozen ranges was "well under way." In Estonia, refrigeration technology company Kitman Coldtech said attackers had accessed a computer controlling a client's refrigeration system and raised the temperature to 50 degrees Celsius, public broadcaster ERR reported. Chief executive Jann Mutso declined to name the store but said the attack was addressed within minutes and caused no significant damage. The Selver supermarket chain confirmed that one of its outlets was affected.

Is This Supermarket Cyberattack Linked to France?

None of the companies has publicly linked Monday's incidents to France, but the pattern is hard to miss. Last month, attackers remotely took control of refrigeration systems in hundreds of supermarkets and independent stores across France. They pushed fridge and freezer temperatures as high as 50 degrees Celsius. French TV channel BFM reported that the attackers appeared to trigger a forced defrost option, which kept units heating instead of cooling. By morning, tonnes of food had perished. Some equipment had melted, and in some stores the heat had sparked fires. Five of France's major retail groups were hit: E.Leclerc, Intermarché, Carrefour, Monoprix and Coopérative U. At least 300 Intermarché and Netto stores were affected. Coopérative U reported more than 100 stores, Carrefour said 80, and Monoprix said about 5% of its roughly 490 stores were targeted. Bruce Hallas, CEO at Re-thinking the Human Factor, who lives in France, noted on LinkedIn that current estimates sit around 400 stores. He added that some individual branches reported losses of about €250,000. Retailers say millions of euros' worth of food was spoiled, which makes food losses the most visible cost of the attack.

Why the Supermarket Cyberattack Targeted Fridges

The French case offers the strongest clue. The attack did not rely on a new exploit. It targeted ageing systems: internet-connected devices that were still online years after their manufacturer stopped supporting them. Experts say this weakness is common across retail and industry. The cyberattacks in France appeared to target old systems in particular. Timing made the damage worse. In France, the attackers struck while shops were closed, so temperatures kept rising for hours with no one in the store to notice. Monday's incidents in Sweden also happened overnight. Estonia shows the other side of the picture. There, the intrusion was caught within minutes and caused no significant damage. The difference between tonnes of ruined stock and almost no loss came down to how quickly someone noticed.

What We Still Don't Know

Key questions remain open. The reports do not say who is behind the attacks or what they want. The full scale is also unclear. Estimates for France range from around 400 to more than 500 stores, and ICA has not said how many of its Swedish stores were hit. The chains affected on Monday have not confirmed whether their equipment shares the ageing, unsupported setup seen in France. What is clear is that the same tactic has now reached at least five European countries, with fridge temperatures set to 50 degrees Celsius each time.

The Binance hack involving more than $6 billion in virtual assets has been attributed to North Korea by the US Federal Bureau of Investigation (FBI), while the cryptocurrency exchange has begun preparing to restore withdrawals in phases and reported that approximately 95% of the affected amount has been covered. The incident, which Binance says occurred around October 29, 2026, has prompted security reviews, efforts to trace stolen assets, and cooperation between law enforcement and industry partners. The FBI refers to the North Korean activity associated with the theft as “TraderTraitor.” In its advisory, the agency said the stolen assets were being converted primarily into Ethereum (ETH), with further laundering through decentralized finance (DeFi) platforms and instant swap services expected. Binance said on November 1 that the first phase of withdrawal services was scheduled to resume between 06:00 and 09:00 UTC. The exchange said the restoration would depend on security assessments and operational readiness checks, with additional assets and networks becoming available as they pass the required checks.

Binance Hack: FBI Attributes $6 Billion Theft to North Korea

According to the FBI, North Korea was responsible for stealing more than $6 billion in virtual assets from Binance on or around October 29, 2026. The agency is working with the US Secret Service (USSS) and the Internal Revenue Service Criminal Investigation division (IRS-CI) to address the activity. The agencies have observed stolen crypto assets being converted primarily into Ethereum. The FBI expects the operators to use DeFi platforms and instant swap services to move the funds through additional laundering stages. The FBI, USSS, and IRS-CI have urged cryptocurrency industry participants to block transactions involving addresses used by the TraderTraitor actors, including transactions derived from those addresses. The request covers THORNode operators, remote procedure call (RPC) node operators, instant exchanges, DeFi services, blockchain analytics firms, and other virtual asset service providers. The FBI has also asked anyone with relevant information to contact a local FBI field office or submit information through the Internet Crime Complaint Center.

Binance Withdrawals to Resume in Phases

In its November 1 recovery update, Binance said it was preparing to restore withdrawals progressively after temporarily suspending the service as a precautionary measure. The exchange said the suspension allowed its teams to contain the impact of the incident, assess affected services, review withdrawal infrastructure, and monitor for residual risks. The company also said it was working with law enforcement and industry partners to trace and recover stolen funds. The first phase prioritizes assets and networks based on user demand over the preceding week. Binance said additional networks and assets would be added as they become ready, rather than reopening every withdrawal service simultaneously. Users may encounter temporary delays or longer processing times during the initial rollout because of traffic volumes. Binance advised users to check the withdrawal page for their selected asset and network, or consult its network status page, to confirm availability. The exchange said deposit services remained open and were not affected by the incident. It also stated that it would absorb the financial impact of the stolen funds rather than pass the losses on to users.

Binance Reports 95% Recovery of Affected Assets

Binance's recovery updates show a steady increase in the amount of affected assets it says has been covered. In its October 31 update, the company reported that coverage had reached approximately 90%, up from around 80% in the previous update. By November 1, Binance said it had covered approximately 95% of the impacted amount. The remaining 5% consists of tokens outside the ten assets it identified as fully backed, which include BTC, ETH, USDT, BNB, SOL, USDC, XRP, USD1, RLUSD, and ZEC. According to Binance, these remaining tokens have lower market liquidity and take longer to acquire at the required scale. The company said it was continuing to purchase the outstanding assets through market transactions and over-the-counter (OTC) channels. The exchange also said its replenishment efforts involved its corporate treasury, a partial deployment of the Secure Asset Fund for Users (SAFU), and a portion of its Futures insurance fund. Binance committed to replenishing SAFU to bring the fund back to approximately $1 billion.

This weekly roundup covers a $6.3 billion security incident at Binance, the arrest of a South Korean hacking ring that used generative AI to breach about 90 companies, Columbia University’s $16.1 million settlement over its 2025 data breach, a 70-month prison sentence for a Ukrainian ransomware affiliate tied to Nefilim and Hive, and Discord’s decision to let search engines index messages from its public servers.  Two threads run through this week’s stories. First, attackers are getting more out of less: one compromised laptop put billions of dollars in crypto at risk, and AI tools let a small, self-taught crew scale its attacks to dozens of victims. Second, the fallout from a breach lasts far longer than the breach itself, as lawsuits, prison sentences, and bounties land years after the original attacks, while a simple default setting can create new exposure. 

The Cyber Express Weekly Roundup 

Binance Hit by $6.3 Billion Security Incident, Nearly $3 Billion Frozen 

Binance says a security incident affected about $6.3 billion in crypto assets, making it one of the largest in the industry’s history. Close to $3 billion has already been frozen on-chain, including 1.567 billion USDT frozen by Tether and 800 million USDC frozen by Circle. Read more... 

South Korean Police Bust AI-Powered Hacking Ring That Targeted 90 Companies 

Seoul police have arrested seven people accused of using generative AI to hack about 90 companies and steal 8.2 million personal records, then demanding payment to keep the data private. The group’s 32-year-old ringleader, who taught himself to hack, used AI tools in roughly 60 of the attacks. Read more... 

Columbia University Settles $16.1 Million Lawsuit Over 2025 Data Breach 

Columbia University will pay $16.1 million to settle a class action over its June 2025 cyberattack. The breach exposed Social Security numbers, health information and financial aid data belonging to about 870,000 applicants and affiliates. An internal investigation concluded the attack was politically motivated, with the hacker looking for evidence of affirmative action in admissions, and found no sign that the data was sold. Read more... 

Ukrainian Ransomware Affiliate Sentenced to 70 Months for Attacks on Hospitals and Businesses 

Artem Stryzhak, 36, has been sentenced in the U.S. to 70 months in prison for his part in the Nefilim and Hive ransomware operations, which caused more than $100 million in losses. Working as an affiliate, he attacked companies, law firms and healthcare providers, including during the COVID-19 pandemic. Stryzhak was arrested in Spain in 2024, extradited in 2025, and pleaded guilty to two conspiracy counts. Read more... 

Discord to Let Google Index Public Server Messages, Raising Privacy Concerns 

Discord will allow search engines to index content from its Discoverable Servers, the more than 63,000 public communities with at least 1,000 members. Server web pages and discussion summaries go live on November 16, and individual messages follow from mid-December. Usernames and avatars will be hidden, and older messages are excluded. Read more... 

Weekly Cybersecurity Takeaway 

Several incidents this week show how far a single foothold can reach. At Binance, one engineer’s compromised laptop was enough to push through unauthorized withdrawals worth billions. In South Korea, generative AI helped a self-taught attacker run dozens of intrusions that would once have needed a larger, more skilled team.  The other common thread is that the consequences of a breach outlast the breach. Columbia is paying $16.1 million more than a year after its attack, Stryzhak was sentenced years after the Nefilim and Hive campaigns, and the U.S. is still chasing his alleged partner with an $11 million bounty. Discord’s change is a reminder that exposure doesn’t always come from attackers: a default-on setting can make years of casual conversation searchable going forward.  Organizations should treat the devices of privileged staff as high-value targets and require multi-party approval for sensitive actions such as large withdrawals. They should assume AI is lowering the cost of attacks and keep basic defenses tight, minimize how much sensitive data they keep and for how long, and review default privacy settings on the platforms their teams and communities use. 

Binance, the world's largest cryptocurrency exchange, said on Thursday that a "security incident" on its platform affected roughly $6.3 billion worth of assets. It is one of the largest security events in the crypto industry so far, though the exchange said close to $3 billion of the affected funds had already been frozen on-chain.  Stablecoin issuers moved quickly after the data breach at Binance. Tether said it had frozen more than 1.567 billion USDT linked to the incident, and Circle froze 800 million USDC. The Arbitrum Security Council also reportedly executed a transaction to freeze about $30.5 million connected to the Binance exploit. 

How the Binance Data Breach Happened 

According to the exchange, early findings point to a compromised employee device. Initial investigation suggests that the security incident may involve a compromised DevOps engineer's laptop, which allowed an attacker to gain access to a service container and submit unauthorized withdrawal transactions," Binance said in an update.  The statement, titled "Security Incident Update," was published on October 30, 2026, at 07:53. It said the company had found no evidence that any wallet private key was leaked. Binance added that it would release a detailed technical post-mortem once the investigation is complete and the facts are fully verified. 

Who Will Cover the Losses 

Binance said it will cover all losses from the cyberattack on Binance using its Secure Asset Fund for Users (SAFU) and the company's own funds. "User funds are safe," the exchange stated. It also said it had worked with blockchain partners to freeze the affected assets. Once remediation is complete, it plans to publish an updated Proof of Reserves. 

Immediate Steps Following the Binance Data Breach 

As an immediate precaution, the exchange said it has: 

• Temporarily suspended deposits and withdrawals while security checks are completed; 
• Revoked the affected address authorization; 
• Engaged law enforcement and blockchain intelligence partners to trace and recover the funds. 

The company said its teams are working around the clock to resolve the issue. "We are working closely with our law enforcement partners to confirm the identity of these criminals and bring them to justice," Binance said.  The exchange asked users to rely only on official Binance channels for updates and to contact Binance Customer Support with any further questions. 

Withdrawals Expected to Resume Within 48 Hours 

In a later update, Binance said it expects withdrawals to resume in 48 hours, after its team "completes a security revamp of the withdrawal service and its related addresses."  Until then, users cannot move funds on or off the platform. Binance has not yet said how the attacker gained access to the engineer's laptop. The company has said those technical details will be in its upcoming post-mortem on the Binance data breach.

Australians filed a cybercrime report about every six minutes over the past year, and artificial intelligence is making the attacks behind those reports faster and more convincing. That is the main finding of the ASD Cyber Threat Report 2025-26. It is the seventh annual assessment from the Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC).

In FY2025-26, the agency received more than 82,000 cybercrime reports through ReportCyber. It responded to over 1,500 cyber security incidents, up more than 20% on the previous year and 36% over five years. It also notified Australian entities of potentially malicious activity more than 4,400 times, almost 80% more than in FY2024-25.

What the ASD Cyber Threat Report Says About AI

The report calls AI the defining force in the threat environment this year. In his foreword, Deputy Prime Minister and Defence Minister Richard Marles wrote that AI is helping malicious actors find vulnerabilities faster and exploit them at greater scale, speed and sophistication. He also noted that new threats have emerged in recent weeks from the unintended actions of AI agents and from model testing.

ASD’s ACSC makes one clear distinction. AI has not created new kinds of threats. It has amplified and sped up existing ones. AI-enabled cyber threats are most visible in social engineering. Attackers are using AI to write phishing emails with no spelling or grammar errors and to automate targeted spearphishing. The Australian Securities and Investments Commission has also seen a sharp rise in scams that use deepfake videos of celebrities and politicians.

The time defenders have to respond is also shrinking. The agency has previously observed that most vulnerabilities are exploited within two weeks, and some within 48 hours of a patch being released. It expects AI-driven tools to shorten that window further over the next 12 months. Publicly reported vulnerabilities (CVEs) rose 30%. Old flaws are still a problem too: ASD’s ACSC recorded the successful exploitation of a vulnerability first identified in 2008.

Incident Severity Grows in ASD Cyber Threat Report Data

Only one Category 2 incident was recorded this year. However, extensive compromises rose from 26 to 40. ASD’s ACSC identified 362 incidents after proactively notifying organisations. A single notification about cPanel vulnerabilities, sent to 340 entities in May 2026, led to more than 60 confirmed incidents.

The number of ransomware incidents held steady at 139, but extensive ransomware incidents rose from 16 to 24. Health Care, Professional, Scientific and Technical Services, and Manufacturing remained the most affected sectors. Data breaches made up 98 incidents, a 66% increase on the previous year. Separately, the Office of the Australian Information Commissioner received 1,205 breach notifications in 2025. That is the highest yearly total since its Notifiable Data Breaches scheme began in 2018.

The financial impact is rising for businesses. The average self-reported cost of cybercrime per business report rose 16% to $93,500. For medium-sized businesses, it rose 45% to $141,300. The average cost for individuals stayed at $33,000. Identity fraud remained the most reported cybercrime, although reports fell 18%.

Stolen access is now a major entry point. Compromised accounts and credentials were among the most frequently reported incident categories, and phishing appeared in 39% of incidents. Government survey research cited in the report found that 55% of Australians reuse passwords across multiple accounts.

State Actors and Critical Infrastructure in the ASD Cyber Threat Report

State-sponsored actors continued to target Australian government, business and individuals to gain sensitive information. The report says these actors are increasingly pre-positioning inside networks to enable future disruption. Marles wrote that the line separating state-sponsored espionage from sabotage and cybercrime is becoming increasingly blurred.

In April 2026, ASD’s ACSC and international partners highlighted a shift by China-nexus actors. These actors are moving towards large covert networks built from compromised home and small office routers, Internet of Things devices and smart devices.

Critical infrastructure accounted for 154 incidents, or 10% of the total, a decrease of almost 7%. Phishing was the leading initial access technique at 36%, and Financial and Insurance Services was the most affected critical infrastructure division at 30%.

What the Threat Report Asks Organisations to Do

In October 2026, ASD’s ACSC released the Essentials series. It evolves the Essential Eight into a principles-based framework with three chapters: Enterprise IT, Operational Technology and Cloud.

Under its Cyber Action Year, the agency is pushing five priorities:

• Replacing or mitigating legacy technology.
• Implementing best-practice event logging.
• Managing supply chain risk.
• Preparing for AI-enabled threats.
• Preparing for post-quantum cryptography, including ceasing the use of traditional asymmetric cryptography by the end of 2030 or sooner.

The report also urges organisations to patch faster. For individuals, it recommends reviewing privacy settings and enabling multi-factor authentication or passkeys.

Suspicious activity, incidents and vulnerabilities can be reported at cyber.gov.au or through the Australian Cyber Security Hotline on 1300 CYBER1 (1300 292 371).

Japanese companies are starting to compensate customers after a run of cyberattacks disrupted internet services and stirred concerns about economic stability. GMO Internet is the latest to do so, pledging payouts after hackers breached its foreign exchange trading service.  In a blog post on Oct 25, chief executive Masatoshi Kumagai said customers would be compensated for losses caused by unauthorized access, and each would receive 5,000 yen (S$41) as “an initial gesture of good faith.”  Kumagai, whose group spans internet infrastructure and cryptocurrency trading, warned that “the internet itself is now starting to break down.” He added: “The internet is increasingly being transformed into a tool that malicious actors use to threaten and rob people.”  GMO Internet shares, worth US$2.6 billion (S$3.3 billion) in market value at the Oct 23 close, fell 11% in Tokyo morning trade while the benchmark index was flat.  The company said a party believed to be behind the attack had demanded money and threatened to disclose company and customer information. GMO Internet refused and said it would handle the incident with police and other authorities. It will give customers a free alternative service for six months, though it cannot yet calculate how the goodwill payments and compensation will affect earnings.  Kumagai said the company’s white-hat hackers had identified security issues, but the depth and speed of the response were insufficient. 

AI and PHP Flaws Put Japanese Companies at Risk

Experts say AI is helping attackers automate tasks from scanning for software vulnerabilities to crafting phishing campaigns, making cybercrime faster, cheaper and harder to detect.  On Oct 23, Japan said it would set up a team to simulate cyberattacks using AI to find weaknesses in technology systems. Organisations were rushing to limit risks from flaws in PHP, the programming language underpinning much of the internet. Last week, government and company websites in Japan, Europe and elsewhere went offline after critical PHP vulnerabilities were disclosed, prompting millions of hacking attempts. 

GMO Internet Chief Seeks Stronger Cyberdefence

Kumagai has asked the Japanese government to apply cyberdefence measures in response to the attack, following the introduction of a cyberdefence system in October. That system could involve steps such as attacking hostile servers to neutralise threats.  “Now is the time for the public and private sectors to work together to protect Japan,” he wrote. 

Rising Security Costs for Japanese Companies

The recent attacks have exposed weaknesses in how Japanese companies protect their large stores of customer data, raising the prospect of steep costs to shore up defences.  “Companies already have standard security measures in place, so if they want to strengthen them further, there is a possibility that the additional cost burden could be quite substantial,” said Shoichi Arisawa, an analyst at IwaiCosmo Securities.  TrendAI data shows 723 cybersecurity incidents in the year to Oct 20, more than the annual totals for 2025 and 2024. Satoshi Nagano, president of ESET Japan, said: “Reports may reflect both the threats organisations face and greater visibility into incidents that would previously have gone undetected, been underinvestigated, or remained undisclosed.”  GMO Internet is not alone in paying customers. Park24, which runs the Times car-sharing service, said on Oct 23 it would pay customers 3,000 yen each after a personal data breach. It will stop keeping identity document images once registration checks are done and expects an extraordinary loss of 5.5 billion yen from its response to the attack and compensation payments. 

Police in South Korea have broken up a cybercrime ring accused of using generative AI to hack about 90 domestic companies, steal roughly 8.2 million personal records, and demand money in exchange for silence. Investigators believe the group's leader, who never studied IT, used AI to rapidly expand the range of targets. 

Seven Suspects Tied to the Cybercrime Ring 

On the 26th, the Cyber Investigation Division of the Seoul Metropolitan Police Agency said it had apprehended seven people, including the 32-year-old ringleader, identified as A, on suspicion of extortion and violating the Information and Communications Network Act. A has been detained, while the other six are being investigated without detention.  The group allegedly broke into the systems of around 90 companies from September last year through this month, taking personal information and internal data. Victims included private academies, hospitals, golf courses and affiliates of major conglomerates. The suspects reportedly warned, "If you don't pay, we'll leak the information," and pointed to the reputational harm, surcharges and damages lawsuits a public breach could bring as extra pressure. 

How AI Widened the Attacks Across South Korea 

A is believed to have learned hacking through blogs and other sources and worked in penetration testing at a cybersecurity company from 2019 to 2022. Early on, A used automated tools to find website vulnerabilities, but from August this year expanded the attacks using generative AI and an AI-powered autonomous penetration system. Police believe about 60 of the roughly 90 victim companies were hacked with AI's help.  Digital forensic evidence, A's statements, and other materials pointed to about 8.2 million stolen records. The cybercrime ring demanded a total of 360 million won from 38 companies, but swift arrests limited its takings to just 300,000 won. Police are also examining whether other companies paid quietly or never reported the threats. 

Tracking Down the Cybercrime Ring 

The investigation began after one victim company filed a report in June. As similar cases surfaced nationwide, police consolidated them in August. From July to September, officers arrested five accomplices involved in the threats one after another, and early this month caught another who had directed the crimes via Telegram. Police searched A's residence in Yeoksam-dong, Gangnam-gu, Seoul, on the 13th, inspecting the generative AI running on a computer used in the crimes. After tracing access logs from victim companies and other records, they arrested A on the 15th and seized computers, hacking tools and accounts used to send threats. On the 23rd, A was sent to prosecutors in custody on suspicion of stealing about 900,000 records from 15 companies that had filed reports. Police plan to investigate allegations involving the roughly 75 remaining companies that have yet to report.

A First for South Korea

Police called it the first case in South Korea in which suspects were caught running a large-scale hacking and data theft operation that exploited generative AI. They said it shows the barriers to cybercrime are falling, as individuals, not just professional hacker groups, can now use AI to attack multiple companies in a short time.  Authorities will keep identifying additional victims and accomplices while tracing the proceeds of the crimes. 

A Yonsei University cyberattack has compromised the personal information of roughly 10,000 students and graduates after outsiders gained unauthorized access to the school’s online portal. The breach comes months after Sogang University disclosed a far larger leak.

The university’s Office of Information and Communications confirmed the breach in a notice sent to affected individuals on Thursday. “The personal information of some university members was confirmed to have been leaked following unauthorized external access to the Yonsei Portal Service,” the office stated.

What the Yonsei University Cyberattack Exposed 

The compromised data included student identification numbers, mobile phone numbers, and email addresses, along with system management details such as login identification keys and the number of failed password attempts on affected accounts. Resident registration numbers were not exposed. 

From 1 p.m. Thursday, affected individuals could check on Yonsei University’s official website which details were compromised. 

Two Hacking Attempts in Less Than a Day 

The cyberattack on Yonsei University reportedly began at around 7:41 p.m. on Tuesday. 

“An attack on the university’s system was detected at the time, and we immediately blocked the IP [internet provider] address,” a university representative told the JoongAng Ilbo. “While we were analyzing the cause at around 10 a.m. the following day, a second hacking attempt was made from a different IP address, which we also blocked.” 

Yonsei reported the incident to the Personal Information Protection Commission (PIPC) on Wednesday afternoon. The Personal Information Protection Act requires organizations to report a personal data breach within 72 hours of becoming aware of it and to notify affected individuals. 

“We plan to gather additional evidence related to the hacking attacks and refer the case to investigative authorities,” the representative said. 

The university also plans a comprehensive security review of its systems, along with stronger monitoring and security measures. It urged students and graduates to be wary of text messages, phone calls, and emails claiming to be from the university, and to avoid clicking links from unknown sources or entering personal information on suspicious websites. 

Sogang University and a Wider Pattern of Breaches 

The cyberattack on Yonsei University follows a series of attacks on higher education institutions. On Aug. 14, Sogang University suffered an external cyberattack that exposed approximately 180,000 records containing personal information of students, graduates, and university staff, according to a notice posted on the Sogang University website. 

The problem goes beyond recent cases. According to data the Ministry of Education submitted to People Power Party Rep. Kim Meen-geon, personal data breaches at universities affected 2.8 million people between 2022 and July this year. 

Calls for Support After Yonsei and Sogang University Incidents 

Experts have called for more cybersecurity personnel and greater funding as hacking attacks grow increasingly sophisticated, including through the use of AI. 

“Just as the government develops information security measures for small- and medium-sized businesses, it should establish support measures to strengthen cybersecurity at universities,” said Kim Seung-joo, a professor at Korea University’s School of Cybersecurity. “Support appears particularly necessary for private universities that lack sufficient funding for cybersecurity.” 

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Every federal bankruptcy court in the United States has lost access to the system it uses to send out bankruptcy notices. A BAE Systems cyberattack has disrupted the Bankruptcy Noticing Center (BNC), the platform that produces and transmits notices for all federal bankruptcy courts across the country.

The Administrative Office of the U.S. Courts confirmed the incident in a statement on Thursday afternoon. BAE Systems, a British multinational, operates BNC systems and websites on behalf of the Federal Judiciary. The Cybersecurity and Infrastructure Security Agency (CISA), which typically handles cyberattacks on federal agencies, referred questions to the U.S. Courts.

What the BAE Systems Cyberattack Has Taken Offline

According to the U.S. Courts, BAE Systems IT and websites that support BNC operations have been impacted by a cybersecurity incident. As a result, all access to the BNC systems and websites that BAE operates for the judiciary is currently unavailable. That includes:

• bnc.uscourts.gov
• bankruptcynotices.uscourts.gov
• notices.uscourts.gov
• the National Creditor Registration Service

The incident has also halted the BNC’s production and distribution of bankruptcy notices for the courts.

The Administrative Office said it has been in contact with the affected courts and is coordinating with BAE Systems. BAE is investigating the incident and working to restore operations. No timeline for recovery has been shared, and the nature of the attack has not been disclosed.

A Government Contractor Target, Again

The BNC disruption is the latest in a series of incidents where an attack on a government contractor or third-party vendor has spilled over into public services.

Last week, a contact center for the Federal Motor Carrier Safety Administration (FMCSA), a Department of Transportation safety agency, was temporarily taken offline after a government contractor was targeted by a cyberattack, according to two people with knowledge of the situation who were granted anonymity because they were not authorized to speak on the record.

The contact center is run by support provider Senture. The FMCSA first reported technical difficulties on social media on October 6. It remains unclear when that attack began or whether it is ongoing.

Courts Have Been Hit Through Vendors Before

In September 2026, the Kentucky Administrative Office of the Courts (AOC) confirmed that Kentucky Appellate Court data was compromised in a breach traced to a third-party vendor.

West Publishing Corporation, operating as Thomson Reuters Court Management Solutions (Thomson Reuters CMS), told the AOC that the incident originated in file systems tied to its C-Track case management platform. C-Track is used by the Kentucky Supreme Court and the Kentucky Court of Appeals to manage case records.

According to Thomson Reuters CMS, an unauthorized third party accessed and obtained court data from C-Track systems across several states, not just Kentucky. In Kentucky’s case, exposure was limited to appellate court data stored within the C-Track infrastructure.

Trial-level records that were never part of an appeal were not affected, since Kentucky does not use third-party vendors for trial court e-filing. The AOC said its appellate courts continued to operate normally throughout the incident.

Why the BAE Systems Cyberattack Matters

Taken together, the three incidents show a common thread. Courts and federal agencies increasingly depend on outside contractors to run critical systems, and when those contractors are hit, the impact lands directly on public services.

In the BNC case, a single compromised contractor has stopped a core function for every federal bankruptcy court at once. How quickly BAE Systems can restore the platform, and whether any data was accessed, remain the key open questions.

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Overnight, while shoppers slept, hundreds of French supermarkets were quietly cooking their own stock. In a French supermarket cyberattack confirmed by retailers on Monday, hackers took remote control of internet-connected refrigeration systems and pushed fridge and freezer temperatures as high as 50 degrees Celsius (122F). By morning, tonnes of food had perished, some equipment had melted, and in some stores the heat had sparked fires. The cyberattack did not rely on a new exploit. It targeted ageing connected devices that were still online years after their manufacturer stopped supporting them, a weakness experts say is common across retail and industry.

What Happened in the French Supermarket Cyberattack

The attackers struck when shops were closed, raising temperatures remotely through the refrigeration control systems. French TV channel BFM reported that they appeared to trigger a forced defrost option, keeping units heating instead of cooling. Five of France's major retail groups were hit: E.Leclerc, Intermarché, Carrefour, Monoprix and Coopérative U. At least 300 Intermarché and Netto stores were affected. Coopérative U reported more than 100 stores, Carrefour said 80, and Monoprix said about 5 percent of its roughly 490 stores were targeted. The full scale is still unclear. Some reports put the total above 500 shops. Bruce Hallas, CEO at Re-thinking the Human Factor, who lives in France, noted on LinkedIn that current estimates sit around 400 stores, with some individual branches reporting losses of about €250,000. Retailers say millions of euros worth of food was spoiled.

Danfoss Refrigeration Controllers at the Center

France's government cybersecurity agency, ANSSI, identified the targeted systems as Danfoss refrigeration controllers, including the AK-SM800 and AK-SC355 models. The Danish manufacturer told AFP that most affected units were legacy products running outdated firmware, and that it had previously advised supermarkets to update them. ANSSI has urged companies using the affected models to disconnect them from the internet or restrict access, and to install software updates immediately. Authorities have opened an investigation and are liaising with other European countries that may have been affected. It remains unclear who carried out the attack. The incident follows President Emmanuel Macron's order last month to protect France's critical infrastructure from Russian "hybrid attacks." Officials have not linked the supermarket attack to any group or country.

Exclusive: Why These Devices Were Left Exposed

In comments shared exclusively with The Cyber Express, Neil Carter, Managing Director of CRAReady.co.uk, explained why systems like these remain vulnerable for so long. "Most of these devices were never designed to be updated in the field. A supermarket refrigeration controller is installed by a contractor, commissioned once and then left alone for ten or fifteen years. Nobody owns it as an IT asset, so nobody is watching for firmware releases. There's also a mismatch in lifetimes. The hardware lasts far longer than the vendor's support for it. Danfoss ended support for the AK-SM 800 in 2021 and the AK-SC 355 in 2016, but those boxes were still running cold chains in 2026. The third problem is how they're connected. Remote access is added for the maintenance company's convenience and simply left open to the internet. Updating carries risk too: if a firmware update fails on a controller running a store's freezers overnight, the stock is lost. So the safest-looking choice is always to leave it alone."

A Night-Long Threat to the Cold Chain

The overnight timing turned a technical breach into a major cold chain failure. Mark Eccleston, Senior Software Engineer at OxBlue, pointed out on LinkedIn that a fridge can go about four hours without power before food is at risk. "Hackers got a whole night with hundreds of them," he wrote. Retailers were forced to discard fresh and frozen products to avoid health risks, and the incident has raised wider questions about how much of Europe's food supply depends on internet-connected equipment running legacy firmware.

What Businesses Should Learn From the French Supermarket Cyberattack

Carter outlined clear steps for businesses running connected equipment: "First, know what you have. Treat building and plant controllers as part of your attack surface and keep an inventory with support end dates. Second, nothing operational should be directly reachable from the internet. Remote maintenance should go through a VPN or be restricted to the contractor's addresses. Third, ask about end of life when you buy, not after. Under the EU Cyber Resilience Act, manufacturers will have to declare a support period that matches realistic product lifetimes. Buyers should already be asking for that in writing. This attack didn't need a zero-day. It needed old, forgotten kit on the open internet, and there's a lot of that out there."

Seoul National University (SNU) has been struck by 28 hacking incidents since 2021, and more than 1,100 pieces of personal information belonging to students, faculty and staff were exposed along the way. The SNU cyberattack figures come from data the university submitted on Sunday to Rep. Baek Seung-ah of the Democratic Party.  The breakdown shows eight attacks in 2021 and 10 in 2022, the highest annual total in the period. Activity then dropped sharply to a single incident in 2024 before rising again to five in 2025. Four more have been confirmed so far this year. Together, these yearly figures account for all 28 incidents, which means none were recorded in 2023.  Departmental systems were the most frequent target, hit in 19 of the 28 incidents. Laboratory systems came next with six, followed by research systems with two. One attack affected an institutionwide system. 

2021 SNU Cyberattack Behind Nearly All Leaked Data 

Across the six-year span, a total of 1,132 pieces of personal information were leaked. Almost all of them, 1,130 records, trace back to a single cyberattack in 2021. In that breach, hackers planted malicious software on SNU servers, which let them run commands remotely and steal personal details of university members, including their portal IDs.  The remaining two pieces of personal information were exposed in 2024, when attackers went after a university research institute. Their focus was on files containing researchers' biographies and résumés.  According to the data, no personal information leaks were confirmed in any of the other hacking incidents. 

Seoul National University Faces Hundreds of Attempts Every Year 

Beyond the confirmed breaches, the university has dealt with a steady stream of attempted intrusions, numbering more than 500 annually in recent years. SNU logged 561 hacking attempts in 2024 and 575 in 2025. Another 588 have been detected so far this year, already exceeding the totals of both previous years.  Explaining the numbers, the university said, "These figures represent hacking attempts detected and blocked through our security monitoring." It added, "We prevented the incidents from spreading through real-time responses and immediately completed the necessary security measures." 

How SNU Handled Reporting After Hacking Incidents 

On the question of reporting, SNU said it notified either the Ministry of Education or the Personal Information Protection Commission whenever a personal information leak was confirmed. However, the university has never requested an investigation by law enforcement authorities into any of the attacks.  The disclosure offers a clearer picture of the digital threats confronting a major South Korean university. While the number of successful breaches has fallen since its 2022 peak, the yearly count of attempted attacks has continued to climb.   That trend suggests the pressure on Seoul National University's networks remains significant, and the SNU cyberattack record is likely to keep questions about how the institution safeguards its community's data in focus. 

This weekly roundup covers a massive exposure of personal data from Denmark's national population register, a U.S. bounty on a Chinese hacker accused of stealing COVID-19 research, Japan's plan to actively search for attackers hiding in its critical infrastructure, a pair of breaches at Japanese publisher Nikkei, a call for AI-driven decision-making in security operations, and a Massachusetts town's ongoing recovery from an August cyberattack.  Two threads run through this week's stories. First, attackers keep getting in through doors that were already open: a company's lawful access to a government register, employees' hijacked email accounts, and unpatched mail servers. Second, the time between intrusion and discovery remains dangerously long, which is why governments and security leaders are pushing to find intruders sooner and respond faster. 

The Cyber Express Weekly Roundup 

Hackers Abuse Company's Legitimate Access to Expose Data of 8.8 Million in Denmark 

The Danish government said unauthorized individuals obtained the names, addresses, and CPR numbers of roughly 8.8 million people from the Central Person Register. They did it by misusing the legal access granted to a private Danish company. The register holds records on about 11 million people, including residents, Danes living abroad, and deceased individuals. Read more… 

US Offers $10 Million Reward for Chinese Hacker Accused of Stealing COVID-19 Research 

The U.S. State Department is offering up to $10 million for information on Zhang Yu, a Chinese national accused of hacking COVID-19 research at U.S. universities on behalf of China's Ministry of State Security. Zhang and his alleged partner, Xu Zewei, are also tied to the 2021 HAFNIUM campaign, which exploited Microsoft Exchange vulnerabilities to compromise more than 12,700 U.S. entities. Xu was arrested in Italy in 2025 and extradited to the U.S. in April 2026. Zhang remains at large. Read more… 

Japan to Launch Threat Hunting Program to Find Hidden Attackers in Critical Infrastructure 

Japan plans to partner with private companies in fiscal 2027 to proactively look for attackers who may already be sitting undetected inside power, telecom, and other critical infrastructure networks. The National Cybersecurity Office will build detection methods by recreating attack scenarios in a virtual environment and will share them with operators. The Defense Ministry will provide experienced personnel to companies on request. Read more… 

Nikkei Hit by Two Breaches as Hijacked Accounts Send 9,000 Malicious Emails 

Japanese publisher Nikkei disclosed on October 4 that attackers had taken over employees' Microsoft 365 accounts. On September 30, they used those accounts to send roughly 9,000 emails with malicious links to staff and external contacts. Nikkei also revealed a separate breach of its Google Workspace accounts, ongoing since late July, that may have exposed the names and email addresses of 1,646 employees and business partners. Read more… 

Agentic AI Turns Cybersecurity Into a Race of Decision Speed 

In an opinion piece, Cyble's Salleh Kodri argues that security teams no longer struggle to see threats. Their problem is "decision latency": the time it takes to turn alerts from many tools into the right action. As AI accelerates attackers' reconnaissance and decision-making, Kodri says defenders should use AI to correlate intelligence and act faster. Read more… 

Andover Confirms Attackers Accessed Town Systems in August Cyberattack 

Officials in Andover, Massachusetts, confirmed that the August 13 cyberattack involved unauthorized access to some town systems. They have not yet determined whether any data was stolen or whether personal information was involved. The town says it paid no ransom. It has hired a law firm and cybersecurity firm Vector3 to investigate, with costs covered by cyber insurance. Read more… 

Weekly Cybersecurity Takeaway 

Several of this week’s incidents started with access that looked legitimate. In Denmark, attackers abused a private company’s authorized connection to the national register instead of breaking in. At Nikkei, hijacked employee accounts sent thousands of malicious emails under a trusted name.  Time is the other common thread. Nikkei’s Google Workspace breach ran for over two months before disclosure, and Andover still doesn’t know what was taken. Japan’s threat hunting plan assumes attackers may already be inside, and Kodri warns that spotting an alert means little if acting on it takes too long.  Organizations should monitor third-party access as closely as their own staff’s. They should secure email accounts with phishing-resistant authentication and actively hunt for intruders rather than wait for alerts. 

An attacker got into some of Andover's computer systems during the Andover cyberattack in August; Town officials confirmed Thursday, though they cannot yet say whether any data was taken.  "The Town has identified unauthorized access to certain systems and is continuing to determine the nature, scope, and sensitivity of any data that may have been accessed or acquired," Chief Communications Officer Phil Geoffroy said in written answers to Andover News.  Some reviewed material appears routine or publicly available, he said, but the full data set remains uncharacterized. 

What Is Known About the Andover Cyberattack 

It is the Town's clearest admission that the Aug. 13 cyberattack on Andover reached its systems, though not proof of copying, removal or publication.  Geoffroy did not identify the systems, say whether they belonged to the municipality or Andover Public Schools, or give a completion date. Investigators must check any accessed data for personally identifiable information, he said. Officials first secured and restored the network, reconnecting equipment, even printers, across municipal and school offices. Another update will come "if/when appropriate."  Town Counsel Doug Heim told the Select Board Sept. 28 that it was unclear whether state-protected information was involved. 

Investigators and Ransom Questions 

The Town hired law firm Constangy, Brooks, Smith & Prophete and cybersecurity firm Vector3 on the evening of Aug. 13. Vector3 is tracing how the attacker entered, reconstructing the attacker's activity, assessing whether data was accessed or removed, and helping monitor more than 3,000 devices.  On ransom demands or negotiations, Geoffroy said only that the Town "did not make or authorize any payments in connection with this incident." Vector3's agreement allowed up to $3,000 for possible communication with the attacker and monitoring of negotiation channels for up to 60 days, though its use is unconfirmed.  No culprit has been named. On Aug. 30, a ransomware group called WallStreet listed Andover as a purported victim on a dark-web site, which proves neither responsibility nor data theft.  Geoffroy would not name agencies notified: "The Town is coordinating with appropriate legal, forensic, and governmental partners as required and cannot comment on any law enforcement-related aspects of the event at this time."  If Chapter 93H, the Massachusetts breach law, applies, the Town must notify the Attorney General's Office, state regulators and affected people. That office had received no notice as of Sept. 22. 

Who Pays for the Cyberattack on Andover?

An Oct. 5 public records appeal response said the Town had received no bills and incurred no costs beyond its insurance policy, seemingly conflicting with agreements estimating at least $39,605 in initial Vector3 and Constangy work. The insurer pays them directly, Geoffroy said.  "Subject to the limits of our policy, Andover will bear no additional costs for these contractors and bills will be paid by our insurer," he said.  The policy covers up to $1 million for several categories of cyber expenses and $100,000 for cyber-extortion, with a $10,000 retention on most categories. The Town did not address overtime, replacement equipment, security upgrades or the retention. 

Town Defends Its Preparedness 

"Based on what is currently known, the Town does not believe this incident reflects a lack of investment in information technology or incident preparedness," Geoffroy said. He credited past spending on technology, cyber insurance and response planning with helping contain the attack, restore services and coordinate quickly, noting longer disruptions elsewhere.  The Andover cyberattack disrupted the municipal and school network for four days, with some restoration continuing afterward. Shared drives returned fully Aug. 21, and VPN access stayed down during its rebuild. Public safety, municipal buildings, phones and Town-operated utilities kept operating.