Your VPN Might Be Leaking Your Real IP Through WebRTC

Most VPN users assume that once their public IP address changes, their real connection is hidden. That is mostly true. But not always. While testing different VPN configurations, I noticed something interesting: my public IP had changed correctly, the VPN tunnel appeared to be working, DNS looked normal, but the browser was still exposing network information through WebRTC. That is a problem, because modern VPN detection is no longer based only on the visible public IP address. Websites can combine multiple signals together: public IP address, ASN and hosting provider, DNS behavior, browser timezone, IPv6 exposure, WebRTC candidates, proxy or datacenter reputation. A VPN can hide one part of your connection while your browser leaks another. What is WebRTC? WebRTC stands for Web Real-Time Communication. It is a browser technology used for real-time features such as: video calls, voice chat, screen sharing, peer-to-peer data transfer. It is built into mo