Here’s something VPN companies would rather not spell out: the ad blockers, tracker blockers, and malicious-site warnings bundled into most of them are DNS filters. They inspect your traffic as it passes through the provider’s own servers. Disconnect from those servers and the filtering stops with them.
NordVPN’s Threat Protection Pro is built the other way around. Instead of filtering at the DNS level, it operates a local proxy on your machine, so it keeps blocking dangerous sites, scanning downloads for malware, and flagging vulnerable installed apps whether or not the tunnel is up.
NordVPN’s own documentation confirms it: no active connection required. That distinction matters more than it sounds, because almost nobody leaves a VPN connected around the clock. You switch it on for hotel Wi-Fi, or a streaming catalog, then forget it. With every other provider, the security tools you paid for spend most of the week asleep.
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What Happened When We Tested It
