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Anthropic and OpenAI Open Vetted Cyber Programs for Offensive Researchers

Anthropic and OpenAI Open Vetted Cyber Programs for Offensive Researchers

FIRST LOOK ATLAS OWASP HIGH Significant risk · Prioritise patching ▲ 7.2 TechCrunch AI

Anthropic and OpenAI have introduced structured vetting programs — Anthropic's Cyber Verification Program and OpenAI's Trusted Access for Cyber — that grant approved offensive security researchers access to AI models with reduced cybersecurity guardrails. These programs create a two-tier access model where the boundary between legitimate researcher and malicious actor becomes a policy decision made by private companies, introducing new social-engineering and access-abuse vectors. Defenders must now account for the possibility that guardrail-reduced model access can be obtained through credential abuse, insider compromise, or vetting-process manipulation.

Claude Fable 5 Jailbreak Attacks Bypass Fallback Defense

Claude Fable 5 Jailbreak Attacks Bypass Fallback Defense

ATLAS OWASP MEDIUM Moderate risk · Monitor closely ▲ 7.2 SecurityWeek

Anthropic has released Claude Fable 5, a high-capability 'Mythos-class' model that automatically falls back to a less capable model (Claude Opus 4.8) when queries touch sensitive domains like cybersecurity and biology. The company conducted over 1,000 hours of external red-teaming with no universal jailbreaks discovered, though it openly acknowledges financially motivated adversaries will attempt to circumvent these controls. Trusted cybersecurity partners under Project Glasswing receive elevated access to the full Mythos 5 capabilities, raising questions about insider risk and tiered trust model security.

OpenAI Daybreak Vulnerability Detection Enables LLM Jailbreak

OpenAI Daybreak Vulnerability Detection Enables LLM Jailbreak

ATLAS OWASP MEDIUM Moderate risk · Monitor closely ▲ 7.2 The Hacker News

OpenAI has launched Daybreak, an AI-powered cybersecurity platform combining GPT-5.5 variants and Codex Security to automate vulnerability detection, threat modelling, and patch validation for enterprise codebases. The initiative introduces a tiered model access structure — including a permissive 'GPT-5.5-Cyber' for red teaming — raising questions about dual-use risk and model misuse if access controls are circumvented. The rollout also contextualises a broader industry tension: AI is accelerating vulnerability discovery faster than defenders can remediate, contributing to triage fatigue and hallucinated bug reports.

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