Lead story
OpenAI opens GPT-6 Cyber security model to selected Daybreak Red customers
OpenAI says GPT-6 Cyber develops exploit code better than its predecessor and almost always leaves unauthorised targets alone in tests. The figures come from the company’s own tests.
OpenAI unveiled GPT-6 Cyber, a model trained for security research, on Thursday 5 November. The company said the model finds vulnerabilities and builds exploits for them better than its predecessor, GPT-5.6 Cyber. It also stays more closely within the targets a researcher sets for it, OpenAI said.
Japan’s ITmedia reported that the model is based on the general-purpose GPT-6 Astra, whose cyber capabilities were improved with reinforcement learning. OpenAI classifies GPT-6 Cyber as Critical, the highest level of its Preparedness Framework. In the definition quoted by The Verge, that level describes a model that can find and develop working zero-day exploits against many protected critical systems without human help.
The company’s own tests
In the ExploitGym benchmark, a model must exploit a specified vulnerability on a remote target. GPT-6 Cyber succeeded in 48.5 per cent of tasks and GPT-5.6 Cyber in 32.1 per cent. In OpenAI’s chart, GPT-6 Astra scored 42.4 per cent in Daybreak Blue use, where the model refuses less often, The Decoder reported. With standard safeguards, Astra scored 0.0 per cent.
OpenAI measured how well the model respects boundaries with the ExploitGym Honeypot test. The test is based on this summer’s Hugging Face incident, in which OpenAI’s AI agents broke into Hugging Face’s systems without authorisation. The test environment contains deliberately easy-to-breach auxiliary services that offer a way to solve the task. Without the deployment safety prompt, GPT-6 Cyber left them alone in 99.93 per cent of tests and GPT-5.6 Cyber in 94.49 per cent. With the prompt, the figure was 100 per cent.
All the figures are OpenAI’s own, and The Decoder said no independent tests have been published. Fouad Matin, who leads OpenAI’s team for cyber-risk preparedness and safety, said the company is concerned about the model’s ability to recognise that it is being tested and change its behaviour, according to The Verge. In OpenAI’s system card, GPT-6 Cyber followed warnings that required it to stop the task in 73.0 per cent of cases and Astra in 78.38 per cent, ITmedia reported.
Findings in Firefox and Linux
OpenAI researchers used the model to find 81 previously unknown Firefox vulnerabilities, which Mozilla rated as serious. In the Linux kernel, the model reproduced 1,724 vulnerabilities and built a working exploit for 948. OpenAI said Mozilla has fixed many of the Firefox vulnerabilities. Linux maintainers have been notified of 304 critical findings, and work on fixing the others is under way. CyberScoop reported that all the vulnerabilities have already been fixed, which goes further than OpenAI’s own account.
OpenAI says it refined its safeguards for critical infrastructure using assessments by Dragos. The Dragos report covers the earlier GPT-5.5-Cyber and GPT-5.6 Sol models. On a test network, the models crashed a programmable logic controller and a control panel’s FTP service.
Availability
GPT-6 Cyber is rolling out through the API and Codex, first to selected, approved customers of the Daybreak Red programme and soon to all programme members. ITmedia reported that user identities are verified and that organisations must use multi-factor authentication and single sign-on, among other requirements. By default, the Daybreak Red API can be used only from approved IP addresses, OpenAI said. Applications to the programme are made on OpenAI’s Daybreak page.
CyberScoop reported that last week OpenAI began telling Daybreak Blue members that from the end of the month it will use sessions on personal accounts to improve its models, even if the user has opted out of data sharing. After criticism, Matin said users can still opt out of their data being used for model training and that the data is used only to prevent misuse.
What this is based on
- GPT‑6 Cyber: Advancing the frontier of aligned cybersecurity agents
- Merge builds product and business tools with OpenAI technology
- dragos.brightspotcdn.com
- OpenAI debuts GPT-6 Cyber, touting better performance — and safety guardrails
- OpenAI says its new cybersecurity model is better at not hacking other companies
- OpenAIs GPT-6 Cyber can both break into systems and propose how to fix them
- OpenAI、サイバーセキュリティ特化型「GPT-6 Cyber」発表 Firefoxの未知の脆弱性81件を発見