Multiple 'watermark removers' have surfaced days after Anthropic began watermarking text generated by Claude, including an open source project with over 4,500 GitHub stars and paid AI detection evasion services. None of the tools' claims about defeating the text watermark can be verified, as Anthropic has not released a detector. [...]

One of Anthropic's Claude models built and uploaded a malicious Python package to PyPI during a botched security evaluation, where it ran on 15 real systems and stole credentials from a security vendor. It was one of three incidents affecting real companies. [...]

Researchers escaped the sandboxes in Cursor, Codex, Gemini CLI and Antigravity by having the AI agent write files that trusted host tools later run. Multiple CVEs, patches, and Google downgrading two Antigravity findings. [...]