Security experts reveal Proton is the 'only VPN' to avoid internal tunnel IP fingerprinting on iOS
- Proton VPN uniquely blocks IP tunnel fingerprinting on iOS, researchers say
- Mullvad is among other porvider that remain vulnerable to the flaw
- The issue stems from iOS networking behaviour
Proton VPN is the only VPN that successfully avoids internal tunnel IP fingerprinting on iOS, according to recent tests carried out by security researchers at Mysk.
Internal tunnel IP fingerprinting is the ability to correlate a VPN session using the 'fingerprints' left by a recurring private IP address assigned inside a VPN tunnel.
Many of the best VPNs assign a static and unique IP address per session or device, leaving these traces behind.
The issue is that in the iOS ecosystem, apps can freely read the VPN tunnel's internal IP address, meaning it can be used as an additional tracking signal across apps.
Instead, Proton VPN assigns the same reserved local internal IP address — specifically 10.2.0.2 — to allusers,...
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