AdGuard has released its custom VPN protocol, TrustTunnel, as open-source software. The protocol, which mimics web traffic, is already integrated into AdGuard's VPN applications. It is now freely available for users to implement and modify.
AdGuard, a provider of privacy-focused tools, announced on January 23, 2026, that it is making its proprietary VPN protocol, TrustTunnel, open-source. This move allows developers and users to access, operate, customize, expand, and build upon the technology without restrictions, as stated in the company's description: available to 'use, run, tweak, extend, and build upon.'
