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

Security researchers used Claude Opus 5 to hijack an OpenAI employee's ChatGPT account Exploit abused an image processing flaw on OpenAI community forums to gain full repo access The entire timeline from vulnerability discovery to repo access took less than 72 hours 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.