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ProtonVPN is a virtual private network service developed by Proton AG, the Swiss company best known for ProtonMail. Built around a strong privacy ethos, ProtonVPN aims to give users secure, private access to the internet by encrypting traffic, masking IP addresses, and routing connections through a global network of servers. Its reputation rests on a combination of transparent policies, open-source clients, and features tailored to privacy-minded individuals. Security and core features ProtonVPN supports industry-standard VPN protocols including WireGuard, OpenVPN, and IKEv2, and uses modern cryptographic algorithms to protect data in transit. Key security features include a kill switch to block traffic if the VPN drops, DNS leak protection, and perfect forward secrecy to limit the impact of key compromise. ProtonVPN also offers "NetShield," an integrated ad, tracker, and malware blocker on supported plans, and the option to route traffic through the Tor network directly from the VPN for enhanced anonymity. Secure Core and advanced routing A standout feature is Secure Core, ProtonVPN’s multi-hop architecture that routes traffic through multiple servers in privacy-friendly jurisdictions before it exits to the internet. This design helps protect users against network-level surveillance and makes it harder for an attacker to trace connections back to their origin. ProtonVPN also provides selective routing (split tunneling) on supported platforms, which lets users choose which apps or destinations go through the VPN. Privacy and transparency ProtonVPN is headquartered in Switzerland, a country with strong privacy protections and outside the main international surveillance alliances. The company maintains a strict no-logs policy and has subjected parts of its infrastructure and apps to independent security audits. Many of ProtonVPN’s clients are open source, allowing external review of implementation and bolstering trustworthiness for privacy-focused users. Plans, performance, and usability ProtonVPN offers a free tier as well as multiple paid plans. The free plan is notable for being genuinely usable without invasive restrictions, although it limits access to a smaller set of servers and may offer reduced speeds compared with paid tiers. Paid plans unlock access to the full server network, higher connection speeds, Secure Core, P2P-optimized servers, streaming-capable servers, and priority support. Performance varies by server and region, but WireGuard support generally provides strong speeds on modern devices. Use cases and conclusion ProtonVPN is well suited for users who prioritize privacy and want a transparent provider with strong technical safeguards. It works for everyday privacy protection, access to geo-restricted content, safe use on public Wi-Fi, secure P2P, and as an entry point to Tor. While no VPN can guarantee absolute anonymity, ProtonVPN combines solid engineering, a privacy-oriented jurisdiction, and transparent practices to be a compelling choice for users seeking a trustworthy VPN service.