Anthropic
Security incidents tagged Anthropic. Newest first.
1 Anthropic incident in the last 12 months
Critical 4 · High 3 · Med 2 · Low 1 · Update ½Severity-weighted: critical 4 · high 3 · medium 2 · low 1 · update ½LessMore
- Incidents
- 1
- Live
- 0
- Patched
- 1
- Days without an incident
- 205
- Longest quiet run: 205 days (Apr 2–Oct 23)
Show 1 older incident1 older incident
April 2026 1
UnratedAnthropic investigates unauthorized access to Claude Mythos Preview via vendorNo fix needed
Anthropic Claude Mythos Preview (vendor environment) No fix needed
In April 2026 Anthropic said it was investigating reports that unauthorized users accessed its unreleased vulnerability-discovery tool Claude Mythos Preview through a third-party vendor environment rather than a direct Anthropic system compromise (Bloomberg / CRN reporting).
