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otonVPN: A Privacy-First VPN with Secure Core and Open-Source Clients Keywords ProtonVPN, VPN, privacy, Secure Core, WireGuard, no-logs, ProtonMail, free VPN, DNS leak protection, Tor over VPN Description An overview of ProtonVPN’s privacy-focused design, core features, free and paid tiers, and considerations for users seeking strong online security. Content ProtonVPN is a Switzerland-based virtual private network service developed by the team behind ProtonMail. It positions itself as a privacy-first VPN, combining strong encryption, privacy-friendly jurisdiction, audited no-logs practices, and features intended to protect users on insecure networks and against mass surveillance. Core privacy and security ProtonVPN uses industry-standard encryption and modern VPN protocols, including OpenVPN, IKEv2, and WireGuard, providing a balance of compatibility and high performance. The service implements AES-256 encryption and Perfect Forward Secrecy, helping keep past sessions secure even if encryption keys are later compromised. ProtonVPN also operates diskless (RAM-only) servers in many locations so that no user data is retained on physical drives, and it offers DNS leak protection, an automatic kill switch, and optional split tunneling on supported clients. Unique features One of ProtonVPN’s standout features is Secure Core, which routes traffic through multiple servers in privacy-friendly countries before it leaves the ProtonVPN network. This design adds protection against attackers who might control or observe exit servers. ProtonVPN also supports Tor over VPN (routing traffic into the Tor network), P2P-friendly servers for torrenting, and a DNS firewall called NetShield (in paid tiers) that blocks ads, trackers, and known malware domains. Transparency and trust ProtonVPN emphasizes transparency: its apps are open-source, and the company has subjected its software and policies to independent audits. Being headquartered in Switzerland gives it an advantage in terms of strong privacy laws and a history of resisting extrajudicial data requests compared with many other jurisdictions. Proton’s long-standing association with ProtonMail reinforces its reputation in the privacy community. Plans and usability ProtonVPN offers a free tier with access to a limited set of servers and moderate speeds—useful for casual privacy needs or testing the service. Paid plans unlock faster servers, Secure Core, streaming-optimized servers, Tor over VPN, and higher connection counts. Clients are available for Windows, macOS, Linux, Android, and iOS, with straightforward setup and user-friendly interfaces. Considerations No VPN is perfect. Free-tier users will face restrictions on server choice and speed, and the best performance and advanced features require a paid subscription. While ProtonVPN works well for privacy, streaming, and secure Wi-Fi use, results can vary by region and specific streaming services. Users should also choose server locations thoughtfully if avoiding particular jurisdictions is important. Conclusion ProtonVPN is a solid option for users who prioritize privacy and transparency. With strong encryption, RAM-only servers, Secure Core routing, open-source clients, and an audited no-logs stance, it provides a comprehensive suite of protections for online anonymity and security. For the best experience—higher speeds and advanced features—a paid plan is recommended.