WorkAugust 27, 2026via The Decoder
OpenAI rallies 100+ companies to sign open letter warning AI-powered cyberattacks on critical infrastructure are imminent
Why it matters
A major coalition including OpenAI, Microsoft, Google, and Anthropic is signaling that AI-enabled cyberattacks on critical infrastructure are no longer theoretical—this frames AI security as a systemic industry and policy problem, not just a vendor concern, and likely precedes regulatory action.
Key signals
- 100+ companies signed open letter
- Signatories include: OpenAI, Microsoft, Google, Anthropic, Deutsche Telekom, SAP
- Letter warns of AI-powered attacks on hospitals and water treatment plants
- Coalition framing: defenders still have the upper hand but time is limited
- Focus: critical infrastructure vulnerability to AI-enabled cyber threats
- 100+ companies signed the open letter
- Focus: AI-powered attacks on hospitals, water treatment plants, and critical infrastructure
- Central claim: defenders still have tactical advantage if action is swift
- Published August 27, 2026
The hook
100+ tech giants just warned: AI-powered attacks on hospitals and water plants are imminent. Here's what changes for your security posture.
OpenAI, together with more than 100 companies including Microsoft, Google, Anthropic, Deutsche Telekom, and SAP, has published an open letter on AI-powered cyber defense. The coalition warns of increasingly sophisticated AI attacks on critical infrastructure such as hospitals and water treatment pla…