What a browser extension can access

Browser extensions can add useful features by reading page content, changing requests or interacting with tabs. Their permissions describe the scope of that access, but a permission prompt is not a full security review. An extension with broad access may see sensitive pages or modify what you read.

How it works

Install extensions only from a source you trust, check the developer, reviews and update history, and remove tools you no longer need. Be especially cautious with extensions that request access to all websites, downloads or browsing history without a clear reason.

Practical takeaways

Use separate browser profiles for work and personal accounts when appropriate. Review installed extensions after browser updates and watch for sudden changes in permissions or ownership.

An extension is software running close to your browsing activity. Convenience should be proportional to the access it receives.

In short: Permissions are a risk signal. The safest extension is the one with a narrow, understandable purpose and narrow access.