Proofpoint Joins the OpenAI Daybreak Cyber Partner Program to Advance Responsible AI-Powered Cyber Defense - Proofpoint has been selected to participate in OpenAI Daybreak, which helps trusted cybersecurity companies integrate AI into defensive security operations. - Through the OpenAI Daybreak Cyber Partner Program, Proofpoint uses GPT-5.5 within its products, services, and managed workflows to s...