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An open letter warns that AI-enabled attacks will become more widespread and sophisticated in the coming months as models become more capable

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A coalition of more than 100 technology companies — among them OpenAI, Anthropic, Google $GOOGL, and Microsoft $MSFT — added their names to an open letter Thursday pressing governments and private-sector organizations to mount a unified defense against AI-enabled cyberattacks.

The letter warns that AI-enabled attacks will become more widespread and sophisticated in the coming months as models become more capable. "The companies and public services our communities depend on — from hospitals to water treatment plants to the infrastructure that powers the internet — are at risk," it states.