🛡️ TrustTunnel unveiled: Open-source tech powering AdGuard VPN

🗞 AdGuardian: Your privacy and security guide

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January 22, 2026 12:58pm EST

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TrustTunnel: Our VPN protocol is now open source

We’re finally lifting the curtain on the technology behind AdGuard VPN. Our VPN protocol is going open source, and it now has a name: TrustTunnel. This is the same modern, secure protocol that has powered AdGuard VPN across mobile, desktop, and browser extensions, now available for anyone to explore, audit, and build upon. We’ve always valued transparency and community, and we hope this release will not only reassure AdGuard VPN users but also help push VPN development forward.

We created TrustTunnel because existing VPN protocols often struggle in restrictive networks, where traffic is easily detected, throttled, or blocked. By blending seamlessly with regular HTTPS traffic and using modern web transports, TrustTunnel makes VPN connections much harder to identify without the usual performance trade-offs. Instead of sacrificing speed for obfuscation, it’s designed to stay fast, efficient, and reliable, even on unstable mobile networks.

This isn’t just a new product release, it’s an invitation to contribute. TrustTunnel can be used independently of AdGuard VPN, with standalone open-source clients for desktop (CLI), iOS and Android, and a self-hosted server option for those who want full control. Whether you’re a developer, a privacy enthusiast, or simply curious about what’s under the hood of AdGuard VPN, now’s the perfect time to dive deeper. Learn how it works, try it yourself, and see why we hope TrustTunnel can have a meaningful impact on the future of VPN technology.

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