# Researchers used Anthropic’s Claude to hack into OpenAI

> **Newsylist Open Intelligence Dossier** · First detected: 2026-09-18 15:29 UTC · Category: Business · Sources: 3 · Current Velocity: 1.3

## Key People, Organizations & Locations
OpenAI, Anthropic, Researchers, Claude

## Multi-Source Evidence Table
| Source Outlet | Headline | Published (UTC) | Verification URL |
|---|---|---|---|
| The Hacker News | Claude Opus 5 Helped Researchers Take Over OpenAI Staff Accounts via Chained Flaws | 2026-09-18 15:30 | [Source Link](https://news.google.com/rss/articles/CBMiggFBVV95cUxPVHlQSE9YZXIydDR0eWZqOTRrZk4zbkJBUklNV2lqRW9PLVhxY2dtR01XUTJTOVFCT1ZCbHhtSDNScmUzMV9jdzBaZ1VTcDZMMVJkUHloS1BONndkQTRQa0xhMEJiYTI3ZDhlMHV2M2dNaHZFMXpyQnhyOWdDLUZGY3hn?oc=5) |
| The Verge | Security researchers used Claude to help them hack into OpenAI | 2026-09-18 15:30 | [Source Link](https://news.google.com/rss/articles/CBMikgFBVV95cUxOX0E3SkFidDl4NTVoOG0tWmtNQm5KMkVzUFF6cE43U0tsbWFGdHFjVjZweS1oTl81LXhQSU83QU52UDF5a3lXYzlCZ0doS1h5UHBPWjUwaXdaeFZnMVloaDVSbkFUZ1AtaDBEOVlHdW52dExrTjVBU2VLZGNsWUc0RkhIbDNiUVExSUlOM1FoOUZVUQ?oc=5) |
| Semafor | AI cybersecurity risks explode as Claude used to break into ChatGPT | 2026-09-18 14:00 | [Source Link](https://news.google.com/rss/articles/CBMirwFBVV95cUxPNFNTeXlLOWpaQXY3dW9WUjhqVXhKUGdBTUQySTRpZy1Db2pjYk1nckd5Q2d4YlFIeXJvZklWUnBpVFhTeWd5eUhvaHhxLTVEVHRZMk1CWjgwLUdMR3ozVmJrWVVzeXh6ZlFRcW5NSXZJeTU1U3BZdmd1ck56WVRCU3piWlUzWEdLcV9jcEE0dS01VTI1TFNhVDFwOVRGdFpvTkF3eWRFOVlpUW9PbzE0?oc=5) |

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*Canonical Source: https://www.newsylist.com/trend/2026-09-18/researchers-used-anthropic-s-claude-to-hack-into-openai*
*Synthesized by Newsylist Open Intelligence Engine under E-E-A-T journalistic standards.*