cyber defenders
Coverage of cyber defenders in the Nexus archive.
- Before the Next Mythos Moment: The Case for an AI Threat Fusion Center
Claude’s developers paused the release of Anthropic’s Mythos 5 due to cyber risks, leading to the Project Glasswing collaboration to provide controlled access for defenders. The U.S. government later forced Anthropic to remove Mythos 5 and its safeguarded version, Fable 5, which the company disputed as a narrow jailbreak. Challenges like lack of standard processes and information-sharing obstacles created a disorganized response to AI threats.
- OpenAI locks GPT-5.5-Cyber behind velvet rope despite slamming Anthropic for doing exactly that
OpenAI is restricting access to its new GPT-5.5-Cyber AI model to a select group of 'cyber defenders,' despite recently criticizing Anthropic for similar gatekeeping practices. The move highlights a contradiction in OpenAI's approach to AI accessibility.
- OpenAI’s new security model is for ‘critical cyber defenders’ only
OpenAI is set to launch GPT-5.5-Cyber, a cybersecurity-focused AI model exclusively for 'critical cyber defenders.' CEO Sam Altman confirmed the model will not be publicly available initially, with a limited rollout to vetted institutions and professionals to enhance cyber defenses.