Low-confidence reports only · Anthropic
Claude Mythos Preview
Every report about Claude Mythos Preview is low confidence, so it's hidden while you're viewing high- and medium-confidence reports.
Anthropic
Claude Mythos Preview
| League | Rank | FBS | Sentence-Years | Incidents |
|---|
| League | Rank | FBS | Sentence-Years | Incidents |
|---|---|---|---|---|
| Open League | #12 | 17 | 1 | 1 |
Standings include alleged incidents.
Record
| Date | Incident | League | Tier | Score |
|---|---|---|---|---|
| Before 9 October 2026 | When a university's public scientific analysis tool returned an error, Claude Mythos Preview used a file-retrieval script on the university's server to copy files, then exploited an injection flaw to run its calculation on that server.Low confidence | Open League | verified | 17 |