Cybersecurity

OpenAI Launches GPT-5.4-Cyber for Vetted Defenders Only

OpenAI Launches GPT-5.4-Cyber for Vetted Defenders Only

OpenAI's GPT-5.4-Cyber is a restricted model fine-tuned for defensive cybersecurity with binary reverse engineering and reduced refusal rates, available only through identity-verified access tiers - a direct response to Anthropic's Mythos Preview.

Claude Mythos Preview Finds Thousands of Zero-Days

Claude Mythos Preview Finds Thousands of Zero-Days

Anthropic's restricted Claude Mythos Preview model autonomously discovered thousands of high-severity vulnerabilities across every major OS and browser, including bugs hiding in plain sight for 27 years.

Anthropic Ships $100M AI Cyber Defense to 12 Rivals

Anthropic Ships $100M AI Cyber Defense to 12 Rivals

Project Glasswing unites AWS, Apple, Google, Microsoft, CrowdStrike, and seven other organizations with $100M in credits for Anthropic's restricted Mythos Preview model to patch critical infrastructure before attackers catch up.