Source: CNBC
“Anthropic’s Mythos model created fake online identities as it looked to pressure humans into approving malicious code updates to an open source project, marking yet another cyber incident carried out by a frontier AI system. The incident happened during a cyber evaluation where the U.K.-based AI Security Institute (AISI), a research body, had removed safeguards, disabled some safety filters, and deliberately given the models Internet access. OpenAI’s GPT-5.6-Sol was also involved in other cybersecurity incidents during the evaluation. It comes after a series of cyber breaches carried out by models developed by Anthropic and OpenAI in recent weeks.” (08/05/26)
https://www.cnbc.com/2026/08/05/anthropic-mythos-openai-security-breaches.html