# Anthropic Built an AI That Hides What It's Doing

- slug: anthropic-built-an-ai-that-hides-what-its-doing
- date: 2026-04-02
- category: Artificial Intelligence

The npm leak also surfaced KAIROS, an always-on daemon that changes what Claude Code fundamentally is, plus Stealth Mode for undisclosed open-source commits and a regression in an internal quality metric. Two data incidents in a week for a $19B company.

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