What access do Chrome extensions have?

What permissions do extensions have?

Extensions can request three categories of permissions, specified using the respective keys in the manifest:permissions contain items from a list of known strings (such as "geolocation")optional_permissions are like regular permissions , but are granted by the extension's user at runtime, rather than in advance.Declare permissions - Chrome Developers

Can Chrome extensions steal your information?

The company says this effectively allows the extensions to collect and exfiltrate any information on the web page, including passwords and other sensitive data. Then there's ad-blocking, which makes up some of the Chrome Web Store's top extensions.

Can Chrome extensions access your computer?

Are Chrome extensions safe? Not only could a browser extension track every page you visit, download your passwords, and your personal information, but by downloading a dangerous extension, you could inadvertently download malware, adware, and trojan horse viruses.

Is Chrome extensions are secure?

It's important to make sure that the extensions you install come from official repositories, such as the Chrome Web Store or the Firefox Browser Add-Ons portal. It gives you some degree of certainty that the software you're installing is legitimate and safe, so be a bit warier of extensions that you find elsewhere.