AWS and OpenAI Launch Daybreak Red and Daybreak Blue on Amazon Bedrock to Accelerate Cyber Defense

AWS and OpenAI announced the availability of Daybreak Red and Daybreak Blue on Amazon Bedrock for eligible customers. Daybreak Red provides access to GPT-5.6 Cyber, a purpose-trained cybersecurity model, while Daybreak Blue offers GPT-5.6 Sol, which has safeguards calibrated for defensive work. These models are part of OpenAI's Daybreak cyber defense initiative, which includes agentic tooling and application red teaming. According to OpenAI, security researchers using GPT-5.6 Cyber through Daybreak Red identified two previously unknown vulnerabilities in V8, the JavaScript engine used by Chrome, which could have enabled memory corruption and a heap sandbox escape. The initial vulnerability was fixed and released as CVE-2026-15903. The models run on Amazon Bedrock's next-generation inference engine, with zero-operator access enforced at the chip, encryption with customer-managed AWS KMS keys, and governance through AWS IAM policies and CloudTrail logging. Inference data is not used for model training. The services are available in the US East (N. Virginia) region, and access requires enrollment in Trusted Access for Cyber from OpenAI.