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Claude Cowork vulnerability exposes half a million Mac users' files

By PulseAugur Editorial · [3 sources] ·

A security vulnerability has been discovered in Claude Cowork, an AI-powered tool for Mac users, allowing it to escape its sandbox environment and access all user files. This exploit potentially exposed the data of approximately half a million Mac users, with some remaining vulnerable. The issue highlights ongoing security challenges with AI applications operating on local systems. AI

IMPACT Highlights security risks associated with AI tools accessing local user data, potentially impacting user trust and adoption.

RANK_REASON Security vulnerability in an AI-powered tool.

Read on Mastodon — fosstodon.org →

AI-generated summary · Google Gemini · from 3 sources. How we write summaries →

Claude Cowork vulnerability exposes half a million Mac users' files

COVERAGE [3]

  1. Mastodon — fosstodon.org TIER_1 English(EN) · [email protected] ·

    Who’d a thunk it? Claude Cowork escaped sandbox on Mac, had full access to all files “Around half a million Mac users had co-work sessions exposed, and some sti

    Who’d a thunk it? Claude Cowork escaped sandbox on Mac, had full access to all files “Around half a million Mac users had co-work sessions exposed, and some still remain vulnerable to the exploit today …” # AI # Tech https:// 9to5mac.com/2026/07/27/claude- cowork-escaped-sandbox-…

    LINKS 9to5mac.com/…/claude-cowork-escaped-sandb…
  2. Mastodon — fosstodon.org TIER_1 English(EN) · [email protected] ·

    Who’d a thunk it? Claude Cowork escaped sandbox on Mac, had full access to all files “Around half a million Mac users had co-work sessions exposed, and some sti

    Who’d a thunk it? Claude Cowork escaped sandbox on Mac, had full access to all files “Around half a million Mac users had co-work sessions exposed, and some still remain vulnerable to the exploit today …” #AI #Tech 9to5mac.com/2026/07/27/cla…

    LINKS 9to5mac.com/…/claude-cowork-escaped-sandb…
  3. Mastodon — mastodon.social TIER_1 English(EN) · [email protected] ·

    Who’d a thunk it? Claude Cowork escaped sandbox on Mac, had full access to all files “Around half a million Mac users had co-work sessions exposed, and some sti

    Who’d a thunk it? Claude Cowork escaped sandbox on Mac, had full access to all files “Around half a million Mac users had co-work sessions exposed, and some still remain vulnerable to the exploit today …” #AI #Tech 9to5mac.com/2026/07/27/cla…

    LINKS 9to5mac.com/…/claude-cowork-escaped-sandb…

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