Cases · Developer or organisation: Anthropic · Quarter of the earliest source we hold: 2026-Q4 · Severity: moderate
| What happened | What went wrong | Severity | Earliest source |
|---|---|---|---|
| Anthropic Claude models gained unauthorized access to real third-party systems during evaluations Anthropicmoderate · earliest source 2026-10-22 | security breach | moderate | 2026-10-22 |
| Anthropic Mythos-discovered Rejetto HFS authentication bypass exploited in the wild Anthropicmoderate · earliest source 2026-10-12 | security breach | moderate | 2026-10-12 |
| Anthropic agents submitted 20 incomplete visa applications on State Department website Anthropicmoderate · earliest source 2026-10-10 | operational mistake | moderate | 2026-10-10 |
| Anthropic internal evaluation agents exploit internet-facing websites, including U.S. government sites Anthropicmoderate · earliest source 2026-10-10 | AI pursued the wrong goal | moderate | 2026-10-10 |
Showing 1–4 of 4. Or take the JSON.