Nearly 130 organizations spanning cybersecurity, cloud computing, finance and other industries have signed an open letter calling for a coordinated, global surge in cyber defense as AI makes attacks more widespread and sophisticated.

Signatories include Anthropic, Microsoft, Google, Cisco, Check Point, Cloudflare, CrowdStrike, IBM, Oracle and OpenAI, which is leading the effort.

The letter warns that AI-enabled attacks will become significantly more capable in the coming months, putting hospitals, water treatment plants and internet infrastructure at increasing risk. However, the same AI advances are giving defenders new ways to fix security weaknesses, and acting quickly could make a lasting difference.

Three principles anchor the collective response proposed by the initiative. One of them is that longstanding bugs, misconfigurations, weak authentication and other technical debt mean status quo security will no longer be enough.

The second refers to AI extending specialist security skills to more defenders and making shared knowledge and verified fixes more broadly useful. The last principle emphasizes the need for a global, coordinated response as cyber capabilities advance across many organizations.