2022---to-better-fight-against-censorship--proton-vpn-introduces-the-stealth-protocol May 2026

: Stealth disguises VPN traffic as "normal" web activity, specifically making it look like common HTTPS connections.

: It is built on WireGuard and compatible with Proton's "VPN Accelerator" technology, maintaining high speeds despite the extra layer of encryption. Key Launch Details Defeat censorship with Stealth, our new VPN protocol : Stealth disguises VPN traffic as "normal" web

In October 2022, Proton VPN launched its custom to combat advanced internet censorship . The protocol was developed in response to a significant surge in censorship attempts following the 2022 Russian invasion of Ukraine and protests in Iran. How Stealth Works The protocol was developed in response to a

: Unlike many protocols that use UDP—which is easily flagged and blocked by firewalls—Stealth uses obfuscated TLS tunneling over TCP to stay undetected. : It establishes connections in a unique way

The primary goal of Stealth is to bypass sophisticated blocks that traditional VPN protocols (like OpenVPN or WireGuard ) often fail to penetrate.

: It establishes connections in a unique way that avoids alerting internet filters.