GoKawiilHacktron researchers used Anthropic's Claude to breach OpenAI employee accounts
Three independent security researchers at Hacktron reportedly used Anthropic's Claude Opus models to gain access to OpenAI employee accounts within 72 hours, exploiting a HEIF image-processing flaw in Discourse, the third-party service running OpenAI's community forums. They proved access by submitting a pull request through a compromised employee's Codex account but stopped short of touching OpenAI's proprietary code in its 'Monorepo' repository.