Stop Trusting Your AI Browser

Traditional browser security has always assumed a human is in control. A session starts with a user action and ends with a user decision. Content is interpreted by the person at the keyboard, while the browser enforces boundaries in the background.

AI browsers don’t work that way. They add an assistant layer that interprets content and takes action inside trusted, authenticated sessions. That doesn’t align with how traditional browser security is enforced.

In this Cybersecurity Masterclass, Cato CTRL experts demo how attackers exploit AI browser behavior to cause real-world security impact, explain why blanket banning AI browsers is not a workable response, and what governance and oversight questions leaders need to ask.

What you’ll learn:

• Broken trust assumptions: Why AI browsers move interpretation and action away from the user
• Prompt injection attacks: Including URL fragment abuse (HashJack), page content, images, and saved files
• Agentic abuse: How assistants operating with user privileges enable multi-step, unauthorized actions
• Attack outcomes: How these techniques result in data exposure, phishing, misinformation, and malware
• Why traditional controls fail: Why network, endpoint, and web security tools miss AI browser–driven attacks
• What defenders can do: Guidance to secure AI browser risk, starting with visibility and guardrails