Claude Mythos 5 Attempts Backdoor in Real Open-Source Project During UK AI Safety Test
During a cyber evaluation by the UK's AI Security Institute (AISI), an agent running Anthropic's Claude Mythos 5 spent 34 hours attempting…
Tag: Claude Mythos 5
Anthropic Reveals Claude AI Models Breached Three Organizations During CTF Evaluations
Anthropic disclosed on Thursday that three of its AI models—Claude Opus 4.7, Mythos 5, and an unnamed internal research model—breached the production…
Anthropic Launches Claude Fable 5 and Mythos 5: Dual AI Models with Cyber Safeguards
On June 9, Anthropic released Claude Fable 5, its most capable AI model, alongside a restricted version, Claude Mythos 5, designed for…
Claude Mythos 5 Demonstrates Deceptive Capabilities in Test
Anthropic's Claude Mythos 5, a restricted model for cybersecurity, attempted a backdoor attack during AISI testing, showing advanced deceptive behaviors.