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Logo of ProtonVPN
Logo of ProtonVPN
TypeVirtual private network service
Operating system

ProtonVPN is a virtual private network (VPN) service provider operated by the Swiss company ProtonVPN AG.[1] The company is a beneficiary of Proton Technologies AG, the company behind the email service ProtonMail.[1] According to ProtonVPN's official website, ProtonVPN and ProtonMail operate on "completely segregated infrastructures" for technical security reasons.[1]


ProtonVPN AG is a beneficiary of Proton Technologies AG, the company behind the email service ProtonMail, and Fondation Genevoise pour l'Innovation Technologique (FONGIT), a non-profit foundation financed by the Swiss Federal Commission for Technology and Innovation.[1] According to ProtonVPN's official website, ProtonVPN AG is legally separate from Proton Technologies AG.[1]


  • Secure Core – a feature that aims to protect users against traffic correlation attacks.[2]
  • Strong Encryption – all traffic is encrypted with AES-256, key exchange is done with 4096-bit RSA, and HMAC with SHA-384 is used for authentication.[3]
  • Forward Secrecy – encrypted traffic cannot be captured and decrypted later if the encryption key from a subsequent session gets compromised.[4]
  • No Logs Policy – by team, ProtonVPN has been listed as top 5 for 'Strict no logging' VPN.[5]
  • Strong Protocols – ProtonVPN only uses the OpenVPN protocol.[6]
  • DNS Leak Prevention – this prevents that connections to the default DNS servers of the system are made to prevent leaks.[7]
  • Kill Switch – their software has a built-in kill switch that will interrupt a user's Internet connection if their VPN server connection drops. This would help to keep the user's true IP address from being accidentally shown.[8]
  • Tor over VPN – selected Tor servers allow users to route all of their Internet traffic through the Tor anonymity network.[8]


In a July 2017 review by TechRadar, ProtonVPN received four out of five stars; the verdict read, "ProtonVPN offers great security and we love the Windows client, but there are cheaper services around."[9] A November 2017 review of the free version by the same TechRadar writer concluded: "If you can live with a choice of only three locations, ProtonVPN's free plan is an excellent choice [...] It’s well worth checking out, if only as a backup for your existing VPN service."[10] Another November 2017 review, however, by That One Privacy Site states of its paid service: "ProtonVPN got a lukewarm reaction from me [...] In the end, (especially given its high asking price), I believe there are better services available on the market."[11]

In 2018 ProtonVPN partnered with Mozilla to pilot selling VPN subscriptions via showing ads in the Firefox browser.[12]

A very detailed January 2019 review rated Proton VPN at 3.5/5, with very good security, reasonable performance, but few server locations.[13]

See also[edit]


  1. ^ a b c d e ProtonVPN. "About Us". About ProtonVPN AG. Archived from the original on 14 May 2018.
  2. ^ Crawford, Douglas. "ProtonVPN Review". BestVPN. Retrieved 18 October 2017.
  3. ^ Bischoff, Paul (5 January 2017). "20+ VPNs rated on privacy and security side-by-side". Comparitech. Retrieved 5 January 2017.
  4. ^ "VPN Security Features". ProtonVPN. Retrieved 16 May 2018.
  5. ^ Mason, John (22 March 2018). "100+ VPN Logging Policies". The Best VPN. Retrieved 22 March 2018.
  6. ^ "ProtonVPN Review 2017". VPNSP. Retrieved 16 May 2018.
  7. ^ Brinkmann, Martin. "ProtonVPN Swiss-based VPN launches".
  8. ^ a b "ProtonVPN Review 2018". VPN Fan. Retrieved 16 May 2018.
  9. ^ Williams, Mike (10 July 2017). "ProtonVPN". TechRadar. Archived from the original on 14 May 2018.
  10. ^ Williams, Mike (20 November 2017). "ProtonVPN Free Review". TechRadar.
  11. ^ "ProtonVPN Review". That One Privacy Site. 16 November 2017.
  12. ^ Mozilla is going to sell VPN subscriptions within Firefox The Verge, 2018
  13. ^ Max Eddy (4 January 2019). "ProtonVPN - Review 2019". PCMag UK. Retrieved 4 March 2019.