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them to 50°C. The attacks follow a similar campaign against around 400 stores in France last month that exploited outdated, internet-connected cooling equipment.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. 

The Binance hack hit USD 6.34B via a fake job interview, an abused AI tool and EIP-7702 delegation. The FBI points to North Korea.

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The post Binance Hack Report Details Fake Job Interview, AI Tool Abuse and EIP-7702 Wallet Drain appeared first on Daily CyberSecurity.

On October 29, Binance lost control of about $6.34 billion in digital assets in a matter of hours. The attackers did not break in on that day, though. They had been working their way inside since June. The Binance hack was a slow campaign aimed at a handful of engineers, and it used a tampered download, a fake job interview and the exchange's own internal AI tool to reach the systems that sign transactions. Binance CEO Richard Teng called it "one of the most sophisticated attacks the digital asset industry has ever seen." He said the company takes full responsibility and that no user will bear the loss.

Why the Binance Hack Targeted Engineers, Not Systems

According to the post-mortem Binance released on Tuesday, the attackers went after people with access to wallet infrastructure. In June, Wallet DevOps Engineer A searched for a popular AI coding tool and downloaded a tampered Homebrew installation. Binance's security team spotted the anomaly, replaced the device and rotated his credentials. But the damage was done in another way: Engineer A's role, and his colleagues on the wallet infrastructure team, were now known to the attacker. In September, the attackers moved to social engineering. Software Engineer B, whose profile on a legitimate job-hunting platform mentioned his Binance experience, was approached by someone posing as a project director. A first-round video interview followed with a supposed HR representative, who shared personal photos and videos on social media to build trust. Binance said this was more advanced than social engineering it had seen before. In the second round, held on a popular chat app, Engineer B was told to download an "assignment" onto his work computer. It contained malicious code that ran during setup, swapped a legitimate development tool for a malicious version, and connected to an attacker-controlled server. The zero-day malware was not detected by endpoint security tools at the time. On October 20, the attackers used Engineer B's compromised computer and an internal AI tool to gain control over Engineer A and another wallet engineer, Engineer C. They then found that Engineer A had a container deployment permission token on his machine.

How the Binance Hack Unfolded on October 29

Between 17:15 and 19:56 UTC, the attacker logged onto Engineer C's computer, used Engineer A's stolen credentials, deployed a container and triggered a malicious script. That gave them unauthorized access to an internal wallet signing service, which they used to send transactions outside the normal withdrawal process. Between 20:05 and 20:09 UTC, five Binance hot wallets sent 233.46 million XRP to an attacker-controlled address. Hot wallets on Solana and Optimism sent about 970,500 SOL and 44.2 million OP. Binance then received an internal alert about large transfers, and another hot wallet sent 18,270 BTC.

Why Binance Couldn't Stop It Faster

Binance suspended withdrawals, but that did not end the outflows. The attacker had used the signing service to exploit Ethereum's EIP-7702 authorization mechanism. By submitting 50 signing transactions, they gave an attacker-controlled smart contract partial execution rights over a Binance hot wallet. Those authorizations lived on-chain and worked independently of Binance's withdrawal systems. And because the wallet used Multi-Party Computation, there was no single private key that could instantly revoke them. Binance had to build a special procedure to do it. The final unauthorized transfer of 2,961.9 ETH was confirmed at 23:56 UTC. At 00:10 UTC on October 30, Binance cleared the malicious delegation.

Who Is Behind It

Over the weekend, the FBI and other U.S. agencies blamed the theft on TraderTraitor, a North Korea state-sponsored group that has spent years attacking cryptocurrency platforms. Binance said it had detected and stopped 57 suspected North Korea-linked threats in 2026 alone, many using fake job interviews and malicious developer tools. On Tuesday, Kim Yo-jong rejected the U.S. findings, calling them a "grave political provocation" in a statement carried by the Korean Central News Agency. Observers noted the statement ended by saying Pyongyang had matters to "reconsider," without directly threatening retaliation. South Korea's Unification Ministry called her personal response unprecedented. An official said it suggested the North was taking the allegations seriously and was "increasingly conscious of its international standing."

Where Users Stand

Binance says it has set aside more than 100% of the funds needed to cover the loss. As of October 31, 98% of impacted token assets had been replenished, and Binance is buying the remaining, less liquid assets. About $2.85 billion has been frozen or intercepted with help from law enforcement, token issuers and blockchain intelligence firms. Withdrawals have broadly resumed. The exchange says it has rebuilt the affected wallet system and AI tool, replaced devices, revoked credentials tied to the affected engineers and brought in independent security firms. The investigation is ongoing.

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.