Nvidia unveils security platform to rein in AI agents and 150bn stock buyback

Nvidia's CEO, Jensen Huang, attends the Q&A session with the media during the Nvidia/Japan AI Ecosystem reception in Tokyo on 16 July 2026. Nvidia's CEO, Jensen Huang, attends the Q&A session with the media during the Nvidia/Japan AI Ecosystem reception in Tokyo on 16 July 2026. Nvidia on Monday unveiled a new security platform that the chipmaker said can stop artificial intelligence agents from going rogue. The company announced a $150bn stock buyback the same day, the largest in US corporate history. The chipmaker said that its Open Agent Safety Platform includes open source software that "sets boundaries for agents" and follows a series of revelations from top AI companies about their models escaping and breaking into other organizations.