VPN Kill Switch Tested 2026: 8 Major VPNs Compared for Leaks

When your VPN connection drops for half a second, your ISP sees your real IP. But that’s enough time for a DNS query to slip through, a WebRTC request to expose your location, or a site you’re visiting to log your actual address. So we tested 8 major VPNs across three real-world dropout scenarios to find out which kill switches actually hold the line. But first — the short answer if you just want the one that works: NordVPN’s kill switch passed every scenario we threw at it with zero leaks. We’ll get into the data below. ...

July 16, 2026 · 7 min · PrivacyGuard