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Gartner Urges Companies to Block AI Browsers as Google Outlines Chrome Agent Safeguards

Google is pitching a second AI to veto risky agent actions in Chrome.

Overview

  • Gartner advises enterprises to block AI-centric browsers such as OpenAI’s Atlas and Perplexity’s Comet, citing significant cybersecurity and privacy risks.
  • Analysts warn that persistent AI sidebars and autonomous agents can exfiltrate data from open tabs to vendor clouds and make opaque decisions that organizations cannot easily audit.
  • Researchers highlight concrete attack paths, including indirect prompt-injection and fake AI sidebars created via extensions, which can trick users into revealing credentials.
  • Consumer guidance stresses limiting these browsers to low-risk tasks and avoiding passwords or financial information, given error-prone automation and manipulation risks.
  • Google details a control architecture for Chrome agents featuring a separate ‘user alignment critic’ model with veto power, scoped ‘Agent Origins’ data access, required user consent for sensitive actions, and a U.S. rollout of Gemini in Chrome, while OpenAI’s security chief calls prompt injection an unsolved problem.