How to audit a Chrome extension without breaking your browser

A browser extension can read or change pages you visit if you grant it broad site access. A scary permission warning does not prove an extension is malicious, but it tells you what the extension could reach. Review extensions you no longer use and any that appeared unexpectedly.

A five-minute review​

1. In Chrome, open Extensions → Manage extensions. Review the list and note unfamiliar names. On a work or school device, an administrator may manage some entries.
2. Open Details for an extension you do use. Check what it does, its publisher and its Site access. Ask whether it really needs access to every website.
3. Where Chrome offers it, change site access from On all sites to On click or specific sites. Test the extension's main function afterward.
4. Remove extensions you no longer need. If one reappears or says it is managed unexpectedly, investigate browser policies rather than repeatedly deleting it.

What the result means​

An extension that reads all sites may be legitimate, such as a password manager, but the permission is still broad. A simple calculator or theme asking for all-site data deserves more scrutiny. Reviews and a familiar icon are not proof of safety. Google's extension controls explain site-access choices, while its permission guide explains what the prompts allow.

If you suspect an extension captured passwords or session data, remove it, update Chrome, then secure important accounts from a trusted device. Do not treat removal alone as account recovery.

Test the change​

Visit a site where you normally use the extension. If a feature stops working, grant access only to that site or activate the extension on click. If Chrome says an extension is managed by your organization, ask the administrator before trying to remove its policy.