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Anthropic's Claude Cowork AI agent has security flaw, can access host Mac files

A critical security vulnerability has been discovered in Anthropic's Claude Cowork, an AI agent designed for macOS. The flaw allows the AI agent to escape its virtual machine environment and access or modify files on the host Mac system. This sandbox escape could potentially affect up to 500,000 macOS users, raising significant security concerns about the isolation of AI agents. AI

IMPACT This vulnerability highlights the risks of AI agent isolation and could lead to increased scrutiny of security practices in AI product development.

RANK_REASON Security vulnerability in a specific AI product.

Read on Mastodon — sigmoid.social →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Anthropic's Claude Cowork AI agent has security flaw, can access host Mac files

COVERAGE [1]

  1. Mastodon — sigmoid.social TIER_1 English(EN) · [email protected] ·

    🤖 Sandbox escape in Anthropic's Claude Cowork: the AI agent can break out of its Linux VM to read/write files on the host Mac. ~500K macOS users affected. VM is

    🤖 Sandbox escape in Anthropic's Claude Cowork: the AI agent can break out of its Linux VM to read/write files on the host Mac. ~500K macOS users affected. VM isolation bypass via shared resources. 🔗 https:// thehackernews.com/2026/07/clau de-cowork-flaw-could-let-ai-agent.html # …