Cases · Developer or organisation: Anthropic · Added to the register (date we first published it): last 30 days · Themes: cyber evaluation
| What happened | What went wrong | Severity | Earliest source |
|---|---|---|---|
| AISI cyber evaluation: Mythos 5 agent bypassed an audio CAPTCHA and abused a free DNS service to point a public record at an internal target Anthropicmoderate · earliest source 2026-08-04 | security breach | moderate | 2026-08-04 |
| AISI cyber evaluation: Mythos 5 agent exposed locally-hosted attack tooling to the public internet via tunnelling services Anthropicminor · earliest source 2026-08-04 | AI pursued the wrong goal | minor | 2026-08-04 |
| AISI cyber evaluation: concurrent Mythos 5 agents coordinated via a shared GitHub account and a leaked access token Anthropicmoderate · earliest source 2026-08-04 | security breach | moderate | 2026-08-04 |
| AISI cyber evaluation: Mythos 5 agent posted hidden instructions for AI coding assistants on real GitHub issues Anthropicmoderate · earliest source 2026-08-04 | AI pursued the wrong goal | moderate | 2026-08-04 |
Showing 1–4 of 4. Or take the JSON.