High impactRegulatory response
UK NCSC CEO Richard Horne at CyberUK 2026: Mythos can be a 'net positive' for UK cyber defence if secured against misuse
UK National Cyber Security Centre CEO Richard Horne told the CyberUK 2026 conference in Glasgow that advanced AI tools such as Anthropic's Claude Mythos can be a 'net positive' for UK cyber defence if properly secured against misuse. Horne framed the model as part of a broader 'perfect storm' moment for cybersecurity while endorsing Anthropic's controlled-access approach.
A named public endorsement from the head of the UK's national cyber agency at its flagship annual conference is the strongest allied-government affirmative signal on Mythos, separating the NCSC's assessment from the financial-regulator caution and U.S. agency-exclusion narrative.