Pad an HTML File Past 256KB and Claude Code Desktop's Preview Could Read Your SSH Keys
Noma disclosed SneakPeek on October 14: big HTML files skipped the preview sandbox. Anthropic fixed it on August 17. Check your Desktop app version.
🎯 Vulnerability: Web Security Vulnerability
💡 Defense Fix: Implement strict input validation, contextual output encoding, and enforce least-privilege authorization controls.