Cases · Developer or organisation: Anthropic · Quarter of the earliest source we hold: 2026-Q4 · Severity: major
| What happened | What went wrong | Severity | Earliest source |
|---|---|---|---|
| CyberXero AI-augmented initial access campaign using Claude Code and PentAGI agents Anthropicmajor · earliest source 2026-10-12 | security breach | major | 2026-10-12 |
| AI agent (ARTEX with Claude) used in cyberattacks targeting South Korean banks Anthropicmajor · earliest source 2026-10-05 | security breach | major | 2026-10-05 |
| Claude used to build Malaysian election influence platform with ~1,000 fake X accounts and fabricated news outlet Anthropicmajor · earliest source 2026-10-01 | produced harmful content | major | 2026-10-01 |
Showing 1–3 of 3. Or take the JSON.