Browser Extension Risks: How to Audit and Secure Your Extensions

The Hidden Risk in Your Browser

Browser extensions run with significant privileges. A malicious or compromised extension can read every page you visit, capture passwords as you type them, modify web content, and exfiltrate data. Several high-profile incidents have demonstrated that even popular extensions with millions of users can be compromised through developer account takeovers or malicious updates.

Auditing Your Extensions

Review every installed extension across your browser profiles. For each one, ask: do I still use this? Does the developer still maintain it? When was the last update? Do the requested permissions match the extension's stated function? A calculator extension that requests access to all website data is suspicious. Remove any extension that fails these checks.

Enterprise Extension Management

Use browser management policies to control which extensions employees can install. Maintain an approved extension list that has been reviewed for security. Block installation of extensions that are not on the approved list. Use Group Policy (Windows), MDM profiles (macOS), or managed browser configurations to enforce these policies. Monitor for policy violations and newly installed extensions.

The True Protection Browser Extension

The True Protection browser extension is designed with security and privacy as core principles. It checks visited URLs against our threat intelligence database to warn about phishing and malware sites. It operates with the minimum permissions necessary and does not collect or transmit browsing history. The extension is open source on GitHub, allowing independent security review of its code.