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  • ✇Arstechnica
  • Muse, Meta's extraordinarily privileged AI assistant, has a serious 0-day Dan Goodin
    Meta founder and CEO Mark Zuckerberg has gone to great lengths to hype the security of its new AI assistant, Muse, claiming it is “built from the ground up for privacy and security.” A zero-day vulnerability that gives locally run apps and terminal commands complete control of the agent raises serious doubts. Further raising questions, Amazon on Sunday began blocking Muse from its site. Meta introduced Muse a few weeks ago. The assistant “books appointments, fills out forms and handles customer
     

Muse, Meta's extraordinarily privileged AI assistant, has a serious 0-day

21 de Setembro de 2026, 19:24

Meta founder and CEO Mark Zuckerberg has gone to great lengths to hype the security of its new AI assistant, Muse, claiming it is “built from the ground up for privacy and security.” A zero-day vulnerability that gives locally run apps and terminal commands complete control of the agent raises serious doubts. Further raising questions, Amazon on Sunday began blocking Muse from its site.

Meta introduced Muse a few weeks ago. The assistant “books appointments, fills out forms and handles customer service,” “proactively takes tasks off your plate,” and can “make purchases, generate images, create documents, and connect with your favorite apps and services.” The macOS app (curiously, there’s no Windows version) also works with a user’s WhatsApp, email, calendar, and social media accounts. When a task requires a tool that doesn’t exist, Muse creates one on the fly.

Meta doth hype Muse security too much

Of course, for Muse to do any of these things, users must first give it access to their accounts. This includes authenticating the assistant to each service and, because the app runs on macOS, giving it permissions to a broad range of operating system-restricted device resources, like writing files to disk, accessing the mic and camera, and monitoring location and calendars. Apple has spent years developing these defenses to prevent installed apps or commands entered into the terminal from accessing these resources, clearly because the company considers them a security threat. Muse completely undoes these default measures.

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  • ✇Arstechnica
  • Former WhatsApp security boss in lawsuit likens Meta’s culture to a “cult” Dan Goodin
    Over the past year, Meta has blanketed TV screens around the world with commercials touting the privacy of Whatsapp, its encrypted messenger with a monthly user base of 3 billion people. “It’s private,” one ad campaign featuring the former cast of the Modern Family TV show says. “On Whatsapp, no one can see or hear your personal messages … not even us,” a different series of ads declares. “Serious risks to user data” On Monday, the former head of security for the Meta-owed messaging app filed a
     

Former WhatsApp security boss in lawsuit likens Meta’s culture to a “cult”

8 de Setembro de 2025, 17:26

Over the past year, Meta has blanketed TV screens around the world with commercials touting the privacy of Whatsapp, its encrypted messenger with a monthly user base of 3 billion people.

“It’s private,” one ad campaign featuring the former cast of the Modern Family TV show says. “On Whatsapp, no one can see or hear your personal messages … not even us,” a different series of ads declares.

“Serious risks to user data”

On Monday, the former head of security for the Meta-owed messaging app filed a federal whistleblower lawsuit that tells a far different narrative. The suit, filed in US District Court for the District of Northern California, recites a litany of purported security and privacy flaws that Meta not only didn’t fix after becoming aware of them, but also kept secret, allegedly in violation of a $5 billion settlement then-Whatsapp parent company Facebook reached with the Federal Trade Commission. The complaint was filed by Attaullah Baig, who became head of WhatsApp security in 2021.

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