A coalition of over 100 technology companies, including OpenAI, Microsoft, and Amazon Web Services, issued a joint warning Thursday. The group identified a limited window to prepare for an imminent wave of AI-enabled cyberattacks.

Sophisticated threats will likely target critical infrastructure such as hospitals and water treatment plants as AI models evolve. The letter urges organizations to make cyber defense an immediate leadership priority.

The signatories called on governments to grant security researchers trusted access to advanced AI models for defense development. The announcement included no specific new investments, commitments, or deadlines.