More than 100 organizations call for an AI-powered cyber defense surge

More than 100 organizations, including leading AI companies, security vendors, banks, infrastructure providers, and technology firms, have signed an open letter warning that the world has a limited window to strengthen cyber defenses before AI-enabled attacks become more widespread and sophisticated. The letter identifies hospitals, water-treatment plants, local governments, and internet infrastructure as exposed targets, with longstanding bugs, excessive permissions, misconfigurations, weak authentication, unpatched software, and technical debt expanding the risk. It calls on organizations to fix their highest-risk weaknesses, security companies to test continuously and verify repairs, governments to fund essential services, and frontier AI companies to provide responsible model access, training, observability, traceable agent identities, and hands-on support. The coalition is consequential, but the document is a call to action rather than a delivery contract. It includes no binding budgets, deadlines, minimum commitments, or independent progress mechanism. The defenders' window will matter only if the signatories turn shared principles into funded remediation, measurable readiness, and public proof that fixes work.