OpenAI Daybreak AI cyber defense pledge

Reporting published September 4 confirmed Google and Microsoft among the more than 100 signatories of an open letter calling for collective action on AI-enabled cyber defense, adding to prior coverage that named Anthropic.

The same reporting included Sam Altman's G20 warning: "I think some things are going to go very wrong with cybersecurity unless people act quite urgently". The letter accompanies OpenAI's September 3 pledge of $1 billion in subsidized Daybreak cyber model access for resource-constrained critical infrastructure operators.

Sam Altman warned at the G20 that cybersecurity would suffer serious harm without urgent action

OpenAI announced the Daybreak for America initiative on September 3, committing $1 billion in subsidized access to its Daybreak AI cyber models, training, and technical support for under-resourced critical infrastructure operators including water systems, electric grid operators, and state and local governments, with the pledge targeted to be consumed over six months. OpenAI is also launching a pilot with MS-ISAC to train state, local, tribal, and territorial cyber defenders on Daybreak tools, and published its 'Defense Factory' architecture for continuous, agent-first vulnerability remediation. Separately, more than 100 companies including OpenAI and Anthropic signed a joint call for collective action on AI-enabled cyber defense, though SpaceX, Nvidia, and Amazon did not fully sign.

More than 100 companies including Anthropic, Google, and Microsoft signed a joint open letter calling for urgent collective action on AI-enabled cyber defense

Financial Stability Board warned G20 leaders that frontier AI cyberattacks could simultaneously hit multiple financial firms and threaten global financial stability