Mythos and friends could be a 'net positive' for UK cyber security defenses but only if they're secured, says top cyber official

A robot standing thoughtfully in front of a giant digital display with code on it.

• NCSC’s Richard Horne says hacking AI tools like Mythos Preview can strengthen defenses if guardrails are in place
• Anthropic’s Mythos Preview, part of Project Glasswing, finds zero‑days at scale
• Horne argues frontier AI exposes weak fundamentals quickly, giving defenders a chance to decisively outpace cybercriminals

With proper guardrails and safety regulations, hacking AI tools such as Mythos Preview can be net positive for cybersecurity defenses everywhere, says Richard Horne, head of the National Cyber Security Centre (NCSC).