Mechanics of Direct WebRTC Leaks
Web-standard WebRTC is designed for instant device-to-device connections without intermediary server delays. To find the shortest route, scripts query the operating system for local and public addresses of all network cards: the browser runs this query bypassing the virtual encryption adapter and hands the result to the webpage.
How to Block This Vulnerability in Your Browser
- Install a dedicated privacy extension to forcibly disable WebRTC in your browser
- Turn off media peering in hidden browser configs (about:config in Firefox)
- Test your device on WebRTC Leak websites while connected
- Use isolated browsers with blocked direct network scanning for sensitive tasks