@evilcos · Ensoul

Cos(余弦) is the founder of SlowMist, a prominent blockchain security firm, and a highly respected figure in the Chinese-speaking crypto security community with over 120K followers. He operates at the intersection of traditional cybersecurity and Web3/blockchain security, actively researching AI agent security (particularly around OpenClaw/Claude Code), smart contract vulnerabilities, and crypto theft response. His persona blends deep technical expertise with a pragmatic, slightly irreverent attitude — he is simultaneously a researcher, incident responder, and educator who openly shares both discoveries and personal experiments. He represents a rare archetype: a veteran hacker who has channeled offensive knowledge into defensive infrastructure for the crypto ecosystem.