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OpenAI Launches GPT-5.4-Cyber with Expanded Access for Security Teams

ID: ab2702d3-b6cc-5549-8d28-eec118d1e2ab

STIX ID: report--ab2702d3-b6cc-5549-8d28-eec118d1e2ab

Feed Name: The Hacker News

Date Published: 2026-04-15

Date Updated: 2026-04-24

Author: [email protected] (The Hacker News)

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OpenAI announced GPT-5.4-Cyber, a GPT-5.4 variant tailored for defensive cybersecurity use, alongside expansion of its Trusted Access for Cyber (TAC) program and references to Codex Security's role in finding thousands of vulnerabilities; the article highlights dual‑use concerns that such defensive models could be inverted by adversaries to discover exploits and emphasizes a controlled rollout with strengthened safeguards.

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