White hat hackers just breached OpenAI using Anthropic's Claude in less than 72 hours — and it is a case study in just how fast AI is advancing

While taking part in an OpenAI bug bounty program, a group of Hacktron security researchers managed to compromise an internal OpenAI ChatGPT account and access internal company code on Github. According to the Wall Street Journal, who first reported the incident, the researchers used a “special version” of Anthropic’s Claude made available to “qualified cybersecurity practitioners” to pull off the attack. The researchers initially attempted to use Claude Opus 4.8 to create a breach, but faced multiple setbacks as the model “struggled across several sessions to produce a working exploit.” But the release of Opus 5 changed everything.

First reported by TechRadar. This page is a short excerpt; the full text is theirs.