Karl Mehta(@karlmehta):The people who broke into OpenAI reported it. The next team might not. Three security researchers reportedly used Claude to help gain access to OpenAI’s internal code repository. They demonstrated that access without reading sensitive code. The same AI capabilities that help researchers find these weaknesses can help attackers exploit them. Defenders need access to those capabilities before an incident, while there’s still time to fix what they find.

2026.09.18 14:01

The people who broke into OpenAI reported it. The next team might not. Three security researchers reportedly used Claude to help gain access to OpenAI’s internal code repository. They demonstrated that access without reading sensitive code. The same AI capabilities that help researchers find these weaknesses can help attackers exploit them. Defenders need access to those capabilities before an incident, while there’s still time to fix what they find.

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Andrew Curran@AndrewCurran_

2026.09.18 02:24

They used Opus 5 to pull off the hack. It appears they had access to the loosened cyber-guardrail version of Opus. They successfully accessed the OAI internal monorepo. The question that will be asked is, if these three guys can pull this off, what can a nation state do.

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