OpenAI Widens Access to Cybersecurity Model After Anthropic’s Mythos Reveal

GPT‑5.4‑Cyber is a model fine-tuned for defenders, lowering boundaries for legitimate cybersecurity work.
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Microsoft Paid Out $2.3 Million at Zero Day Quest 2026 Hacking Contest

Researchers found more than 80 high-impact cloud and AI vulnerabilities during the event, which had a $5 million prize pool.
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Claude Code, Gemini CLI, GitHub Copilot Agents Vulnerable to Prompt Injection via Comments

A researcher has disclosed the details of the AI attack method he has named ‘Comment and Control’.
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$10 Domain Could Have Handed Hackers 25k Endpoints, Including in OT and Gov Networks

Researchers found adware capable of killing cybersecurity products and pushing more dangerous payloads to infected systems.
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