As Mythos fixes Mozilla flaws, unauthorized access spells disaster

Mozilla used Claude Mythos Preview to identify and fix 271 Firefox vulnerabilities.

At the same time, reports surfaced that an unauthorized online forum may have accessed the model through a third-party vendor.

Anthropic says it is investigating, and there is still no confirmed proof that the claim is true.

The episode highlights how unauthorized access to a frontier AI security model could expose vulnerability data and aid attackers.