Proton VPN: Fast & Secure Firefox extension security report

This permission allows modification of Chrome's privacy settings. Rated Critical because it can disable security features, modify network configurations, and compromise browser security settings.

This permission allows injection and execution of JavaScript on any webpage. Rated Critical because it can modify page content, steal sensitive data, and inject malicious code into any site the extension has access to.

This permission enables the extension to monitor and analyze all web requests made by the browser. Rated Critical because it can observe all network traffic including sensitive data, track browsing behavior, and gather authentication tokens.

This permission allows the extension to intercept, modify, or block any web request in real-time before it reaches its destination. Rated Critical because it can modify sensitive data (like passwords, credit cards) before encryption, redirect traffic to malicious sites, or block security updates.

This extension can intercept, modify, and block web requests in real-time.

The following context increases the overall risk:• 10% increase: Early script execution enables pre-emptive content manipulation

This permission allows storing data locally in the browser. Rated Medium because it can persist sensitive user data, track user activities over time, and potentially store malicious payloads.

This permission enables tab management and monitoring. Rated Medium because it can track open tabs, access tab metadata, and monitor user browsing patterns.

This permission grants temporary access to the current tab. Rated Medium because it can access current page content when invoked, though limited to user-initiated actions.

Host permission — access limited to this URL pattern.

Host permission — access limited to this URL pattern.

Host permission — access limited to this URL pattern.

Host permission — access limited to this URL pattern.

Host permission — access limited to this URL pattern.

This extension runs content scripts at document_start.

This permission detects system idle state. Rated Low because it only observes user activity state without access to activity details.

This permission displays system notifications. Rated Low because it can only show user-visible notifications without accessing system data.