AI browsers are rewriting the rules. Is your security keeping pace?

Open Microsoft Edge today and a small Copilot icon waits in the corner. Click it and the browser can summarize a page, translate a paragraph, or draft an email.

Google is adding similar capabilities to Chrome with Gemini, while the less well-known Arc and Dia are developing models that can read, reason, and act for users. This marks a new chapter for the browser, powered by agentic AI.

These tools are turning the browser into an intelligent assistant. Yet while we read the neat paragraph the assistant returns, something else may be happening unseen. Hidden text, an image tag, or an advert could contain instructions the AI follows, quietly sending credentials or downloading malicious files.