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Experts Warn AI-Powered Cyberattacks Have Hit a 'Watershed Moment'
Anthropic says the model is being tested with select partners as it warns of faster, more scalable cyber exploitation.
On Thursday, Anthropic confirmed that an internal draft blog post revealing Claude Mythos, an unreleased AI model, was exposed online due to a misconfigured content management system.
Anthropic's draft describes Mythos—also termed Capybara—as a 'step change' in performance and 'the most capable we've built to date' with advanced coding and cybersecurity capabilities.
The company clarified the exposure resulted from 'human error' rather than a security breach; cybersecurity stocks including Palo Alto Networks and Okta fell sharply Friday.
Anthropic is testing the model with early-access customers to bolster defenses against an 'impending wave of AI-driven exploits' while privately warning government leaders of risks.
Industry analysts warn that 'shadow AI' and the model's potential for large-scale attacks are driving pressure to accelerate defensive AI adoption and tighten controls throughout 2026.