WebRTC is a function built into most web browsers that allows your device to communicate with other devices without the need of an intermediary server. It’s a completely legitimate feature that has many uses, including video calls and live streaming on social media platforms. For WebRTC to work, it requires access to detailed information — including your real IP address and device type. While WebRTC isn’t malicious, the amount of data WebRTC has access to can pose a privacy risk, especially if you’re using a VPN. A vulnerability in the software can cause WebRTC to leak your real IP address even if you’re connected to a VPN, which is why it’s important for privacy-concerned users to test for WebRTC leaks before browsing online.