Polymarket names Warren Jenson its first CFO as the company aims to grow in the US; Jenson served as finance chief of Amazon, EA, NBC, and most recently Nielsen (Katherine Hamilton/Wall Street Journal)

Anthropic released a threat-intelligence report detailing how its Claude models were intercepted to prevent misuse in cyberattacks, influence campaigns, surveillance, weapons development, biological research, scams, illicit distillation and other illicit activities. The company says it disrupted multiple plots this year and terminated research whose intent could not be verified as legitimate or malicious.