Anthropic reportedly withholds access to Mythos 5.1 from UK safety testing body
The decision marks the first time the AI Security Institute has been left out of pre-release evaluations of Anthropic models
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GCX Managed Services eyes channel growth with triple leadership hireNews The managed network and security services provider has appointed new channel leads for the UK, Italy, and the DACH region
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Is Shai-Hulud back? Researchers spot 'wormy boy' slipping past npm malware scanning featuresNews After a 111-day hiatus, Aikido detected a previously-documented Shai-Hulud worm payload in four npm package releases published this week
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Anthropic says Claude Fable 5.1 ‘sets a new standard for coding, knowledge work, and long-running problem-solving tasks’News The launch of Claude Fable 5.1 includes new security and privacy safeguards, and at a cheaper rate
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AI testing firm Irregular the source of ‘misconfigurations’ that led to Meta, OpenAI, and Anthropic AI incidentsNews The “frontier security lab” has been referenced in multiple cyber incident statements
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Why the US imposed export controls on Anthropic’s Fable and Mythos models – and why they’ve been liftedNews Anthropic tightens up safeguards and offers expanded early access to US government to end export control issues
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Anthropic touts new Claude Sonnet 5 model range, offering performance ‘close to that of Opus 4.8, but at lower prices’ – here’s what users can expectNews Claude Sonnet 5 comes with intuitive agentic capabilities, performance boosts, and cost-efficient ‘effort levels’
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Copilot Cowork is now generally available: Everything you need to know, including pricing, usage limits, and new featuresNews A host of partner plugins are already available for Copilot Cowork, and more are coming
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Anthropic suspends Fable and Mythos systems "for all users" after US government claims jailbreak riskNews Despite complying with the government, Anthropic suggests it's only a "potential narrow, non-universal jailbreak"
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Anthropic just launched Claude Fable 5, its first Mythos-class AI model – but it has new safeguards to prevent misuse and will ‘fall back’ to Opus 4.8 for ‘high risk’ queriesNews The launch of Claude Fable 5 marks the first public release of a Mythos-class AI model
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‘We experimented with efforts to differentially reduce these capabilities’: Anthropic toned down Opus 4.7’s cyber uses in wake of Claude Mythos releaseNews Testing of new cyber-related safeguards for Anthropic’s Opus 4.7 model could shape the future public release of Claude Mythos
