Prompt injection

Week 44 · 26 Oct-1 Nov

3 sources filed · EN 1 · RU 1 · JA 1

  • B

    Part 4: Claude Opus writes the tools

    Problem with in-chat calculation: a different method each time, no way to test it, and logic rebuilt on every request even with saved API calls.

    45commands with their own SQLite database in the first tool set written by the Opus agent (the set grew later)

  • A

    A guard hook passed all 27 tests and was still broken by an attacker agent

    The reported attack, as he relays it from a security news post: Codex was made to add a rogue MCP server and launch a second Codex with approvals and sandbox off (over 90% of attempts); Claude Code was made to write ANTHROPICBASEURL into settings and leak its OAuth token (about half of attempts).

    27self-written tests the first guard passed (16 failed when the guard was swapped for a no-op)

Week 42 · 12-18 Oct

1 source filed · EN 1