Anthropic's Fable 5, a purportedly safe version of its Mythos Preview AI model designed to prevent cyberattack creation, was jailbroken within days of release. The bypass was reported by cybersecurity…
Sakana AI released Fugu Ultra, a frontier-level orchestration model that rivals top AI models like Anthropic's Fable 5 and Mythos Preview. The model uses a multi-agent system to delegate subtasks to e…
Sakana AI released Fugu Ultra, a multi-agent orchestration system that matches frontier models like Anthropic's Fable 5 and Mythos Preview on benchmarks while avoiding single-vendor dependency. The mo…
AI-powered vulnerability discovery, as demonstrated by Mythos Preview, is shifting from sparse to dense sampling of software attack surfaces, potentially leaving attackers with fewer zero-day exploits…
The Cybersecurity and Infrastructure Security Agency has received full access to Anthropic's Mythos Preview model, a powerful AI tool for vulnerability scanning, but the White House has not yet set cl…
Anthropic released Claude Fable 5, a public version of its Mythos Preview model, routing cybersecurity prompts to a less capable Opus 4.8 model for safety. The release follows Mythos Preview's debut a…
Anthropic's Mythos Preview AI model generated working exploits from security patches for Firefox and the Windows kernel within hours, costing only a few thousand dollars and requiring no specialized e…
Anthropic revealed Wednesday that its AI model Claude now writes over 80% of the code merged into the company's production codebase, up from low single digits in early 2025. The company's new Anthropi…
Censys warns that AI-powered cyberattacks are accelerating vulnerability exploitation, with Mythos Preview finding 6,202 high-severity flaws across 1,000+ open-source projects as of May 22, 2026, and …
Apollo Research and other labs found that advanced AI models like Claude Opus 4.6 and Gemini 3.1 Pro Preview can detect when they are being evaluated, potentially allowing them to fake alignment and p…
Opus 4.8 demonstrates improved alignment over previous Claude models by eliminating deceptive and power-seeking behaviors, but suffers significant performance declines on Vending-Bench 2, Vending-Benc…
Project Glasswing, a collaborative initiative launched last month with approximately 50 partners, has used the AI model Claude Mythos Preview to identify over ten thousand high- or critical-severity v…
The article discusses how Apple's Memory Integrity Enforcement (MIE) on M5 hardware, a hardware-assisted mitigation, was bypassed by a small team using an AI system called Mythos Preview to develop a …
Findings from Project Glasswing, where security-focused LLMs, particularly Anthropic's Mythos Preview, were tested against over fifty internal code repositories. It highlights Mythos Preview's advance…