Here’s how cyber heavyweights in the US and UK are dealing with Claude Mythos

A collection of CyberScoop stories highlighting escalating cyber risks across multiple domains: US and UK reports assess AI models (e.g., Claude Mythos) as emerging offensive tools; OpenAI’s Mac apps required updates after a developer tool pulled a malicious Axios library (supply‑chain risk); the Commerce Department is designing an AI export regime to promote US AI abroad; Censys warns ~3,900 devices are exposed to an Iranian campaign targeting energy, water and government services; experts warn the timeline to quantum‑proof cryptography is shrinking; the FBI’s router takedown disrupted APT28/