Claude Code Source Leak: Anti-Distillation DRM, KAIROS Autonomous Mode, and the Defensive Architecture
The Claude Code source leak is most interesting for what the defensive architecture reveals: anti-distillation via fake tool injection, Zig-level client attestation below the JS runtime, and undercover mode that strips AI attribution from open-source commits — each individually bypassable within hours by anyone who reads the activation logic. The more significant find is KAIROS, an unreleased autonomous daemon with GitHub webhooks, nightly memory distillation, and cron-scheduled refresh every five minutes, showing Anthropic is building always-on background agents, not session-based assistants. The leak itself was a known Bun bug left unpatched for 20 days — the gap between what Anthropic built and what it shipped is the operational risk signal, not the defensive code.