Cyber Security
Complying with a Trump-administration export-control directive, Anthropic has suspended all foreign-national access to Fable 5 and Mythos 5 — and disabled the models for everyone, including US users.
Anthropic has made Fable 5, the first commercial model from its advanced Mythos class, available to the public — while reserving the unrestricted Claude Mythos 5 for vetted cybersecurity partners.
Cisco has launched Cloud Control, a toolset that lets companies build their own armies of defender AI agents, a response to a world where cyberattacks increasingly come from swarms of hostile agents.
Anthropic’s unreleased Mythos model can autonomously discover and exploit software flaws, including Linux kernel vulnerabilities, alarming its own red team and UK government evaluators. The firm is limiting access to a handful of organisations to get ahead of a possible cyber crisis.
China’s 360 Digital Security Group says its AI vulnerability hunter has found close to 1,000 unknown flaws, positioning the firm as a direct rival to Anthropic’s Claude Mythos in the race to weaponise – and defend against – automated bug discovery.
Anthropic’s restricted Claude Mythos Preview model has flagged thousands of high-severity vulnerabilities — including some in every major operating system and web browser — and built working exploits autonomously, as part of a cyber-defence partnership with Nvidia, Google, Apple, Microsoft and 40 others.
The Pentagon is quietly funding Twenty, a stealth startup building autonomous AI agents for offensive cyber operations, as the US-China cyber arms race accelerates.
Red-team startup CodeWall says its autonomous AI agent gained full read-write access to McKinsey’s Lilli platform in two hours — a preview of machine-speed attacks on corporate AI.
Security researchers have caught hackers using large language models to weaponise hijacked AI infrastructure, turning compromised servers into a self-propagating botnet that mines crypto and launches attacks.
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