Meta's Muse agent tops 6.6M downloads as NYT reports leadership overrode safety warnings

Meta's Muse agent has been a consumer hit, reaching 6.6 million downloads roughly a month after its September 8 launch. But a New York Times investigation into Mark Zuckerberg's decision to ship it reports that leadership overrode internal safety warnings.

Muse acts on the web on users' behalf, and its reach is already constrained by the sites it visits: about a third of tested websites block it, and Amazon refuses to let it crawl listings — a sign that major platforms see browsing agents as a threat to traffic and commerce control.

Security researchers have been especially critical. Coverage cited in the community describes the sandbox as 'plain irresponsible', with KVM-escape risk sitting one layer away from production databases. A WIRED-cited case in which Muse shared a user's address with a Marketplace buyer has circulated widely as an example of agent actions with real-world consequences.

Muse is part of the week's broader 'sandbox is leaking' theme alongside Anthropic's live-web eval incidents and DeepSeek's reported key misuse. Meta also faces scrutiny over Llama safety in the Tech Against Terrorism research. Watch for regulatory interest given the NYT reporting, and whether more sites follow Amazon in blocking agents.