Gartner recommends organizations ban AI-powered web browsers due to significant security and privacy risks. These browsers have features like AI sidebars and the ability to act autonomously on behalf of users. Still, they risk leaking sensitive data to cloud services and are vulnerable to attacks and mistakes. Even with possible mitigations—such as stricter privacy settings, backend security evaluation, and user education—Gartner believes the risks outweigh the benefits, so most organizations should block AI browsers for the foreseeable future.
https://www.theregister.com/2025/12/08/gartner_recommends_ai_browser_ban/