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. Photograph: Philip Fong/AFP/Getty ImagesView image in fullscreenNvidia’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. Photograph: Philip Fong/AFP/Getty ImagesNvidiaNvidia unveils security platform to rein in AI agents and $150bn stock buybackChipmaker says new system was designed to prevent AI agents from going rogue amid incidents at top companies

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.

The disclosures have sparked furious debate about the safety of advanced artificial intelligence systems, including self-improving models that some fear could race out of human control.

Nvidia executives said in a media briefing that the new system could have prevented a recent incident involving a swarm of OpenAI agents that autonomously hacked into the AI company Hugging Face.

“From what we know, this new security platform could have stopped the breach if it was being used in frontier labs for model evaluation early on,” said Justin Boitano, the company’s vice-president of enterprise AI, referring to companies at the forefront of AI.

Nvidia also said its board approved expanding its share repurchase program by $150bn, raising the total amount to $235bn. The previous record was held by Apple with its $110bn buyback in 2024.

“Our cash generation gives us the capacity to invest in ​the technologies that advance this transformation and return capital to shareholders,” Nvidia’s CEO, Jensen Huang, said in a statement.

Last month, Nvidia forecast about ⁠70% revenue growth for fiscal 2028, reassuring investors who have questioned ​how long the AI ​spending surge can last after ​years of explosive growth.

The Hugging Face incident was a high-profile breach that inflamed safety concerns about AI, which were followed by similar rogue actions involving OpenAI’s models including breaching an Australian health department website. Anthropic and Meta have also disclosed that their AI systems hacked into other organizations on their own.

Nvidia’s software, called OpenShell, lets developers “formally verify an agent has enough authority to do its job and no more”, Boitano said.