The UK AISI found Mythos Preview is the first model to solve both their cyber ranges end-to-end. No model had ever solved the AISI’s “Cooling Tower” cyber range before. We're getting it to defenders as fast as we responsibly can. More to come on our Glasswing work soon.
CYBERSECURITY
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UK AI Institute: Mythos and GPT-5.5 show rapid cyber growth
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The UK’s state AI Security iIstitute findings:
1) Mythos is a big gain in cyber capabilities. But so is GPT-5.5
2) It is hard to establish an upper bound on Mythos/GPT-5.5, which appear to be limited by tokens used, rather than ability.
3) Capability doubling time is 4.5 months -
Appreciating Layers of AI Security: Beyond Prompt Injection Dangers
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if your reaction to this is “haha openclaw bad, see prompt injection is the #1 danger” you:
1) havent sufficiently appreciated the layers to this tweet
2) havent seen enough ai api keys -
Anthropic’s path for Mythos releases questioned amid competition
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I don't understand the path forward for Mythos releases. Google & OpenAI will have equivalent models, and they are approaching AI cyber risk guardrails differently, so they will presumably just release their versions. How does Anthropic get out of the government approval path?
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Mini Shai-Hulud attack threatens AI coding workflows like CI and hooks
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the Mini Shai-Hulud attack is scary because it attacks new AI coding workflows like CI, editor hooks, agent configs, etc
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OpenAI’s Daybreak and the Future of AI in Cyber Defense
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Daybreak from @OpenAI is interesting because it points to one of AI’s most practical frontiers: cyber defense.
— Harold Sinnott 📱 (@HaroldSinnott) 12 mai 2026
The real opportunity is not just faster detection or response. It’s helping security teams continuously secure software in environments where threats move faster than… https://t.co/o13MpMXMwIDaybreak from @OpenAI is interesting because it points to one of AI’s most practical frontiers: cyber defense. The real opportunity is not just faster detection or response. It’s helping security teams continuously secure software in environments where threats move faster than
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OpenAI Launches Daybreak AI-Powered Cybersecurity Tool
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🚨 OpenAI drops Daybreak: AI-powered cyber defense that scans codebases, spots vulns, & fixes fast! o1 + Codex team up for next-level security. Defenders, level up now.
— Futurepedia – Learn to Leverage AI (@futurepedia_io) 12 mai 2026
Who's trying it?
👉 https://t.co/WfwnQ41R3A#AITools #Cybersecurity #OpenAI pic.twitter.com/WsL6Udk6xqOpenAI drops Daybreak: AI-powered cyber defense that scans codebases, spots vulns, & fixes fast! o1 + Codex team up for next-level security. Defenders, level up now. Who's trying it? https://
openai.com/daybreak/ #AITools #Cybersecurity #OpenAI -
OpenAI Unveils Daybreak: AI Agent System for Automated Cybersecurity Workflows
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OpenAI acaba de presentar el futuro de la ciberseguridad automatizada.
— Nico (@nicos_ai) 11 mai 2026
Ha presentado Daybreak, un sistema de agentes de IA que:
• detectan vulnerabilidades
• validan fixes
• automatizan workflows completos de seguridad
Y esto ya no parece un simple copiloto.
→ Daybreak… https://t.co/VW8N7HxxN9 pic.twitter.com/HEuKfwbvLCOpenAI has just unveiled the future of automated cybersecurity. It has introduced Daybreak, an AI agent system that: • detects vulnerabilities
• validates fixes
• automates complete security workflows And this no longer feels like a mere copilot. → Daybreak combines -
OpenAI Launches Daybreak to Advance AI-Driven Cybersecurity
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OpenAI is launching Daybreak, our effort to accelerate cyber defense and continuously secure software. AI is already good and about to get super good at cybersecurity; we'd like to start working with as many companies as possible now to help them continuously secure themselves.
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OpenAI Launches Daybreak, an Agentic Cybersecurity Tool
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OpenAI just launched a new cybersecurity product called 'Daybreak' that pairs GPT-5.5 with Codex to act as an agentic security team across a codebase.
— The Rundown AI (@TheRundownAI) 11 mai 2026
The product scans repositories, identifies vulnerabilities, generates patches, and automates detection and response.
It ships… pic.twitter.com/WdZkgIPZMoOpenAI has just unveiled a new cybersecurity product named 'Daybreak,' which combines GPT-5.5 with Codex to function as an autonomous security team for a codebase. The tool scans repositories, detects vulnerabilities, generates patches, and automates threat detection and response. It is now available.