Analysis · curated 28 Aug 2026

A call for collective action on cyber defense

Coverage timeline

discovered openai.com primary 28 Aug 2026theregister.com

Single-source analysis — first reported, latest, and curated coincide.

Why it matters

The collective-cyberdefense letter signals that major AI builders and security vendors expect a near-term surge in AI-powered attacks against critical infrastructure, shaping the defensive priorities and tooling defenders will be asked to adopt.

OpenAI convened more than 100 tech and infosec companies—including Anthropic, Google, Microsoft, Cloudflare, CrowdStrike, Fortinet, and Palo Alto Networks—behind an open letter warning that AI-enabled cyberattacks will become far more widespread and sophisticated in the coming months, threatening critical infrastructure such as hospitals, water treatment plants, and internet backbone. The letter, and The Register's commentary on it, calls for putting cyber-capable AI models into defenders' hands and coordinating a collective response, while noting the irony that many signatories helped build the AI technology now cited as a threat.