OpenAI Expands Cyber Defense Program to Thousands of Security Researchers
OpenAI's Trusted Access for Cyber (TAC) program now covers thousands of vetted researchers and hundreds of critical infrastructure teams, with GPT-5.4-Cyber for offensive technique analysis.
OpenAI significantly expanded its Trusted Access for Cyber (TAC) program in April 2026, extending GPT-5.4-Cyber access to thousands of verified individual security researchers and hundreds of enterprise teams defending critical infrastructure.
What TAC members get:
Impact reported: The TAC program has contributed to identifying and fixing over 3,000 critical and high-severity vulnerabilities across member organizations' codebases.
Debate: Security researchers in the independent community argue the vetting process favors large corporations over individual researchers. OpenAI has committed to expanding access through academic partnerships and bug bounty program integration.
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