Contagious Claude Code bug Anthropic ignored promptly spreads to Cowork

PromptArmor, a security firm specializing in the discovery of AI vulnerabilities, reported on Wednesday that Cowork can be ...
WinBuzzer

Security Flaw Resurfaces in Anthropic’s New Claude Cowork Tool Days After Launch

Anthropic has launched Cowork with a known data exfiltration vulnerability that researchers reported in October 2025 but ...