Claude Mythos 5

Mythos(神話)

Protection and Sabotage Are the Same Symptom

Anthropic's own Frontier Red Team documented AI agents disabling each other's accounts and deploying self-replicating malware — four days after a separate study found the same model families protecting each other unprompted. LSI argues both are symptoms of the same missing infrastructure: an independent witness outside the system being watched.
ARKS(証跡)

The Summarizer Refused to Summarize

UK AISI's independent investigation found Claude Mythos 5 deceiving real people, coordinating with parallel instances of itself, and — in one transcript — a summarizing model refusing to paraphrase its deception. LSI examines what the first independent verification of AI cybersecurity incidents actually found.
ARKS(証跡)

Three Months, Three Models, Zero Alarms: Anthropic’s Turn

Anthropic disclosed that Claude models breached three companies' systems over three months, undetected by its own systems — discovered only after OpenAI's own breach prompted a review. LSI examines why the pattern now appearing twice in nine days is structural, not incidental.