Image created with Gemini. Image prompt: A flat-scanned 1920s Dada Merz collage on aged kraft board showing a weathered manila envelope with a broken red wax seal spilling torn ledger scraps, punched tram tickets, and rows of faded passwords and account digits, a tarnished skeleton key taped across the corner with linen tape, and the word SECURITY spelled in cut-out mismatched letterpress typefaces glued at slight angles across the top. Aged newsprint cream, faded vermilion, ink black and muted slate blue, with coffee stains, foxing, visible paper fiber edges and buckled glue, flat even lighting, no digital rendering.
Get started with the Codex Security Plugin | OpenAI | OpenAI
https://openai.com/daybreak/codex-security-plugin/
We’re expanding OpenAI Daybreak to help defenders move faster from vulnerabilities to fixes. > Codex Security is now easier to use across the CLI, plugins, and the Codex app – scanning code, building threat models, validating findings, generating patches, and exporting results”
https://x.com/reach_vb/status/2069110672886002140
We’re expanding OpenAI Daybreak to help democratize patching vulnerable software at machine speed: – Codex Security plugin: find, validate, and fix vulnerabilities right inside Codex – The full version of GPT-5.5-Cyber model: a great model for trusted defenders – Cyber Partner”
https://x.com/OpenAI/status/2069104283824640023
Anthropic test found vulnerabilities in classified US systems in hours | AP News
https://apnews.com/article/anthropic-mythos-ai-classified-systems-vulnerabilities-testing-3e8762c0527c4d8ed657cbe48c84a718
Reuters has now added more context to last week’s Mythos reporting. According to AP, Anthropic’s Mythos model identified vulnerabilities in highly sensitive U.S. government computer systems during a testing exercise conducted with Washington’s intelligence agencies. The tests”
https://x.com/kimmonismus/status/2069692592250360126
Daybreak: Tools for securing every organization in the world | OpenAI
https://openai.com/index/daybreak-securing-the-world/
Trump Administration Asks OpenAI to Stagger Release of New Model Over Security Concerns — The Information
https://www.theinformation.com/articles/trump-administration-asks-openai-stagger-release-new-model-security-concerns
Wild story on AI + diagnostics via the New York Times: In 2025, 45-year-old security guard showed up at a Queens ER, coughing up blood and struggling to breathe. Chest X-ray: clean. Electrocardiogram: abnormal, but nothing pointing to a diagnosis. They learned he’d recently”
https://x.com/TheRundownAI/status/2069454020012302536
Codex Security plugin for security teams: deep scans, validating findings, tracing attack paths, building threat models, generating codebase-specific patches for review, and exporting into other tools:”
https://x.com/gdb/status/2069128701850386834
GLM-5.2, not Mythos, is the real security emergency Until last week, attackers faced a dilemma in using frontier models. Even if they won the cat-and-mouse game of fake accounts to keep API access, and even if they could prompt a model into helping them hack, their usage was”
https://x.com/joshua_saxe/status/2069289170107842572
An update. A US official tells me that Sen. Warner misunderstood the NSA director Gen. Rudd in this case. Rudd did use the ‘hours, not weeks’ wording, but the use of Mythos in this context was–as widely assumed–part of a red-teaming effort, i.e. testing the security of internal”
https://x.com/shashj/status/2069078104941961293
That’s a very interesting take on Claude Tag. The main concern: pervasive security risk and lock in with unclear token consumption”
https://x.com/TheTuringPost/status/2069853985922826528
We want to help all companies be secure, working with the USG and the security ecosystem. *The full version of GPT-5.5-Cyber is here; state of the art performance on CyberGym. *Patch The Planet and Codex Security will help solve security problems instead of just finding them.”
https://x.com/sama/status/2069121360744550796
Meta hires Virtue AI founders
https://www.axios.com/2026/06/25/meta-hires-virtue-ai-founders-security
U.S. Presses Meta to Agree to A.I. Reviews – The New York Times
https://www.nytimes.com/2026/06/23/business/meta-ai-government-reviews-security.html
The AI shift in cyber risk: why leaders must act now | National Cyber Security Centre
https://www.ncsc.gov.uk/news/the-ai-shift-in-cyber-risk-why-leaders-must-act-now
Prompt Injection as Role Confusion
https://role-confusion.github.io/
🧵 Open source runs on more than code. Over the past week, we funded maintainers directly, invested in Rust and its ecosystem, launched Patch the Planet for AI-assisted security work, and expanded Codex for OSS to more maintainers.”
https://x.com/OpenAIDevs/status/2069457015227940891
Patch the Planet is our effort to help open source maintainers move from security findings to merged fixes. We’re working with Trail of Bits, HackerOne, Calif, researchers, and maintainers to bring Codex Security and advanced models into the remediation process, with human”
https://x.com/OpenAI/status/2069104288417390688
New w/ @leomschwartz @amir: The Trump admin has asked OpenAI to stagger the release of GPT-5.6 over security concerns. On Thursday, CEO Sam Altman told staff that the government will be approving access to GPT-5.6 customer by customer, a highly unusual approach.”
https://x.com/steph_palazzolo/status/2070241787180966279
OpenAI launches new security tools and updates GPT-5.5-Cyber
https://www.testingcatalog.com/openai-launches-new-security-tools-and-updates-gpt-5-5-cyber/
We’re accelerating patching, in addition to vuln finding, with new tools and models in OpenAI Daybreak. Our models are now discovering and generating patches for critical vulns in major browsers, network infrastructure, and operating systems (such as FreeBSD and the Linux”
https://x.com/gdb/status/2069112120206332130
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