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Proton VPN Review

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Simon Migliano
Simon Migliano

Simon Migliano is a recognized world expert in VPNs. He's tested hundreds of VPN services and his research has featured on the BBC, The New York Times and more. Read full bio

Fact-checked by JP JonesAdditional Testing by Luke Williams

Proton VPN reviewRanked #25 out of 61 VPNs
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Privacy

Free
9.5/10
PrivacyRanked #4 out of 23 free VPNs for Privacy
Best Rating
9.7/10
Average Rating
5.2/10
Worst Rating
0.1/10

We calculated this rating by examining the VPN's logging policy, jurisdiction, ownership, and privacy features. We also evaluated its history of handling user data and responding to legal requests.

Read our VPN testing methodology to learn more.
Paid
9.5/10
PrivacyRanked #3 out of 61 VPNs for Privacy
Best Rating
9.7/10
Average Rating
5.2/10
Worst Rating
0.1/10

We calculated this rating by examining the VPN's logging policy, jurisdiction, ownership, and privacy features. We also evaluated its history of handling user data and responding to legal requests.

Read our VPN testing methodology to learn more.

Proton VPN is a legitimate service that you can trust to keep your online activity private and anonymous. Its zero-logs privacy policy has been audited and verified by third parties and real world cases. The VPN does not collect or sell any user data, and its Swiss jurisdiction also means it doesn’t have to adhere to any data retention laws.

Originating IP AddressNo
Browsing ActivityNo
Individual Connection TimestampsNo
Date of Last ConnectionNo
VPN Server IPNo
Device InformationNo
Individual Bandwidth UsageNo
Account InformationYes

Proton VPN is one of precious few VPNs that actually has a truly zero-logs policy — almost no information about you is stored whatsoever. This policy is exactly the same whether you use the free or premium version of the app.

The only thing that Proton VPN stores is the email you give when you create an account. You can easily distance yourself from this by using a brand new, anonymous email address.

All profile data is encrypted and stored locally on its servers and is immediately deleted when you terminate your account.

An Image of Callum Tennant analyzing Proton VPN's Privacy Policy on a macOS laptop.

Proton VPN’s logging policy goes on to clearly describe what information is and is not retained by the service.

This is one of the best VPN logging policies we’ve ever seen — especially as it’s been proven to be true.

Proton VPN was put to the test in January 2019, when a Swiss court approved a request asking for information about a Proton VPN user. Proton VPN was unable to provide any user data, as it simply hadn’t stored any.

This means Proton VPN is part of a small number of VPN services to have had their logging policies verified by a real-world test — we believe this to be the ultimate test of a VPN’s privacy policy.

Proton VPN has also had its logging policy audited by a third party. Published in April 2022 by Securitum, the audit confirmed that Proton VPN doesn’t retain any user data.

Proton VPN is Based in Switzerland

Proton VPN operates under the jurisdiction of Switzerland, which is a good base for a VPN service provider.

Switzerland is a good VPN jurisdiction for these reasons:

  1. Switzerland has strong privacy laws, a history of respecting user privacy, and does not require VPN providers to store data on users.
  2. Switzerland is not part of the EU, allowing it to sidestep all EU data retention laws, like the Data Retention Directive (2006).
  3. Switzerland is not a member of the 14 Eyes alliance or any other intelligence sharing coalition, meaning it does not have a formal structure set up for collecting and sharing surveillance data with other nations.

All of Switzerland’s privacy-hostile laws, like BÜPF and NDG, do not apply to Proton VPN since the company isn’t considered a “major telecommunication operator” nor a “major internet service provider.”

This means Proton VPN benefits from all the advantages of its Swiss base, while also not having to abide by the drawbacks.

How Private Is Proton VPN Compared to Other VPNs?

The table below compares Proton VPN to five other private VPN services based on jurisdiction, data collection, and logging policy audits.

Streaming

Free
0.0/10
StreamingRanked #52 out of 23 free VPNs for Streaming
Best Rating
9.9/10
Average Rating
4.6/10
Worst Rating
0.8/10

We calculated this rating by identifying which streaming services the VPN could unblock and measuring how consistently it could access them.

Read our VPN testing methodology to learn more.
Paid
5.2/10
StreamingRanked #16 out of 61 VPNs for Streaming
Best Rating
9.9/10
Average Rating
4.6/10
Worst Rating
0.8/10

We calculated this rating by identifying which streaming services the VPN could unblock and measuring how consistently it could access them.

Read our VPN testing methodology to learn more.

Proton VPN has recently improved its streaming performance. It now works with 6 Netflix regions, HBO Max, Hulu, Disney+, Amazon Prime Video, and more. It’s an excellent VPN for streaming—but only if you pay for it. The free version of Proton VPN doesn’t unblock any of those streaming sites.

Streaming ServiceWorks with Proton VPN FreeWorks with Proton VPN
BBC iPlayer (UK)NoYes
DAZN (Canada)NoYes
Disney+ (UK)NoYes
Hulu (US)NoYes
ITVX (UK)NoNo
Max (US)NoYes
Netflix (US)NoYes
Netflix (UK)NoYes
Prime Video (US)NoYes
Sky Go (UK)NoYes

Proton VPN’s streaming ability depends on the plan you subscribe to. While its free servers are blocked by Netflix, its Plus servers consistently work with US Netflix and 5 other regions.

An Image Testing Proton VPN with US Netflix on macOS.

Proton VPN works well with US Netflix.

Although Proton VPN claims it works with Netflix “in almost every country,” our tests reveal it unblocks just 6 Netflix regions.

Though higher than average, this is significantly fewer than other top VPNs, like ExpressVPN and NordVPN, which can access 18 and 17 regions respectively.

Proton VPN also fails to unblock many of the most popular Netflix regions, including Australia, Canada, and the UK.

Proton VPN Works with the Best Streaming Sites from Around the World

Not only is Proton VPN a great Netflix VPN, it also unblocks Hulu, BBC iPlayer, Disney+, and Amazon Prime Video. In our latest round of tests, we even found it worked to watch the Australian Football League from abroad.

In the screenshot below, you can see us testing Proton VPN with BBC iPlayer:

Using Proton VPN to unblock BBC iPlayer

Proton VPN worked with BBC iPlayer every time we tested it.

Below is a list of Proton VPN’s servers we tested that successfully unblock popular streaming services:

Don’t judge the free version too harshly — we did find it works with F1TV to stream live F1 races without paying. Plus, it’s extremely rare for free VPNs to work with any streaming sites.

We’ve made an up-to-date list of the best free VPNs for Netflix to help you find one.

Speed

Free
9.4/10
SpeedRanked #14 out of 23 free VPNs for Speed
Best Rating
10/10
Average Rating
7.0/10
Worst Rating
0.4/10

We calculated this rating using our proprietary tests of download, upload, and ping speeds across servers in 10 countries.

Read our VPN testing methodology to learn more.
Paid
8.6/10
SpeedRanked #35 out of 61 VPNs for Speed
Best Rating
10/10
Average Rating
7.0/10
Worst Rating
0.4/10

We calculated this rating using our proprietary tests of download, upload, and ping speeds across servers in 10 countries.

Read our VPN testing methodology to learn more.

Proton VPN is a very fast VPN, with an average local download speed of 87Mbps. However, it has fallen behind its big rivals in our recent speed tests. Even using WireGuard, its local download speeds are consistently slower than NordVPN, IPVanish, and several others. Proton VPN Free, though, is the fastest free VPN on the market.

To perform our speed tests, we connected to Proton VPN servers located across six different continents. We use a 100Mbps internet connection, similar to what your baseline speed at home might be. Here are the results:

Running a speed test using our New York server with Proton VPN. It is producing a fast download speed of over 90Mbps.

While Proton VPN’s local download speeds are good, we’ve seen plenty better.

Oddly, despite testing from New York, US, Proton VPN actually produced faster download speeds on several other test servers located farther from us than its New York server.

There’s a chance that its New York servers may just be slower or more congested than others, and that the download speeds you get on a server near you will be faster.

Proton VPN did struggle with download speeds on servers located extremely far away, though: 64Mbps in South Africa and 76Mbps in Australia are decent numbers, and better than a lot of less reputable VPNs, but it’s still slower than big-name rivals like Hotspot Shield or even Ivacy VPN.

EXPERT ADVICE: To get the fastest speeds, make sure that ‘VPN Accelerator’ is enabled in your app’s settings. It can be found in the Connection tab.

Proton VPN Free Is the Fastest Free VPN

Proton VPN’s free app, however, really impressed us in our testing. In fact, Proton VPN Free is the fastest free VPN we’ve ever tested.

You can see the free version’s speed test results in the table below:

Not only are its raw upload and download speeds impressive, but Proton VPN Free is the only reputable free VPN with no data cap. That means you’ll never run out of bandwidth for downloading, streaming, gaming, or anything else.

Just beware that with only 200 free servers available to connect to (versus 6,587 for the paid app), your speeds might not be as consistent due to congestion.

Security

Free
9.8/10
SecurityRanked #2 out of 23 free VPNs for Security
Best Rating
9.0/10
Average Rating
6.4/10
Worst Rating
1.0/10

We calculated this rating by testing the VPN's security protocols, encryption, leak protection, and kill switch reliability. We also assessed the provider's track record and any past security incidents.

Read our VPN testing methodology to learn more.
Paid
9.8/10
SecurityRanked #1 out of 61 VPNs for Security
Best Rating
9.0/10
Average Rating
6.4/10
Worst Rating
1.0/10

We calculated this rating by testing the VPN's security protocols, encryption, leak protection, and kill switch reliability. We also assessed the provider's track record and any past security incidents.

Read our VPN testing methodology to learn more.

Proton VPN has excellent security credentials that have been verified by third-party audit. Its open-source apps use industry-standard VPN protocols along with AES-256 encryption, and it easily passed our IP, DNS, and WebRTC leak tests on all platforms. Proton VPN can be trusted to mask your true IP address and encrypt your data.

Independent AuditYes
VPN Kill SwitchYes
Leak ProtectionYes

Proton VPN is one of only a few VPNs to have both open-source apps and a published third-party security audit.

Proton VPN’s Windows, macOS, Android, and iOS apps are all open-source. The source code is freely available to view on Github, and all vulnerabilities discovered so far have been fixed.

The benefit of open-source apps is that anyone can view and contribute to their development. This improves the app’s security due to the error checking of a larger community.

This represents a level of transparency and commitment to security that we rarely see from other VPN providers — we love that Proton VPN has made the effort to do this.

Proton VPN’s Highly Encrypted Connections

As part of our security tests, we inspected Proton VPN’s connection logs to assess the strength of the encryption used. We were impressed with what we saw.

Here are Proton VPN’s encryption specifications:

  • Traffic is securely encrypted using the AES-256 cipher.
  • Connections established via an RSA-2048 handshake.
  • Perfect Forward Secrecy via an ECDH key exchange.
  • Authentication is provided using an SHA-384 hash.
Testing Proton VPN Free with Wireshark on macOS

Proton VPN successfully encrypted our test data transfers.

Our tests confirm Proton VPN’s encryption exceeds the security needs of most users. The VPN’s encryption will protect and hide your data from your ISP and any potential snooper or attacker.

Proton VPN’s Advanced Security Settings

Proton VPN’s applications include many advanced security and privacy settings. Below we listed the most important app features:

Kill Switch

A VPN kill switch is a key security feature. Without one, you risk exposing your IP address to snoopers if your VPN connection disconnects unexpectedly.

Proton VPN includes a kill switch on its Windows, Mac, iOS, and Android apps. It’s not enabled by default, so make sure you turn it on in the ‘Connection’ tab within the Preferences menu.

We put Proton VPN’s kill switch to test by running a series of manual IP and DNS leak tests, while disconnecting the VPN connection. In all cases, the kill switch worked perfectly and did not expose our true IP address.

Proton VPN's kill switch

Proton VPN’s kill switch.

Server Locations

Free
0.8/10
Server LocationsRanked #60 out of 23 free VPNs for Server Locations
Best Rating
9.9/10
Average Rating
6.7/10
Worst Rating
1.0/10

We calculated this rating by assessing the number of countries and cities available, their geographic spread, and availability in popular regions.

Read our VPN testing methodology to learn more.
Paid
9.7/10
Server LocationsRanked #2 out of 61 VPNs for Server Locations
Best Rating
9.9/10
Average Rating
6.7/10
Worst Rating
1.0/10

We calculated this rating by assessing the number of countries and cities available, their geographic spread, and availability in popular regions.

Read our VPN testing methodology to learn more.

Proton VPN operates a wide range of server locations with a total of 6,587 servers in 112 countries. This is a good spread of servers, even when compared to top VPNs, like ExpressVPN and Private Internet Access.

ContinentProton VPN Free
Countries with Servers
Proton VPN
Countries with Servers
Europe341
Asia134
North America16
South America07
Africa022
Oceania02

Most of Proton VPN’s servers are physical, bare-metal servers that are actually located in their listed country.

Ensuring that servers are genuinely based in such a wide spread of countries is really impressive. Even though there are the exceptions, we really like Proton VPN’s approach here.

That said, Proton VPN does rent the vast majority of its VPN servers from third-party data centers. We prefer VPN services to own most of their servers, as it reduces the possibility of servers being compromised or subject to interference by hackers.

A Proton VPN representative told us the company has taken extra steps to ensure its rented servers are secure and do not log any information. Proton VPN has always advocated for user privacy and security, so we trust it when it says this.

Proton VPN does own a small number of its servers, too. These are part of its Secure Core network.

Proton VPN Free Doesn’t Allow You to Choose Server Location

If a premium VPN has a free version then it’s almost guaranteed that the server selection will be heavily reduced, and Proton VPN is no exception.

Disappointingly, while Proton VPN Free used to let users choose between servers in Japan, the Netherlands, or the US, it now automatically connects you to the nearest server based on your location. This means you’ll be connected to a server in one of these three countries or possibly in Poland or Romania.

This change is a significant downgrade. For example, from the US, we can no longer use Proton VPN to get a Japanese IP address or change our location for services like YouTube TV, as we were always connected to a server within our home region.

User Experience

Free
7.8/10
User ExperienceRanked #17 out of 23 free VPNs for User Experience
Best Rating
9.9/10
Average Rating
7.0/10
Worst Rating
2.0/10

We calculated this rating by assessing the VPN’s ease of use, interface design, and setup process across multiple platforms.

Read our VPN testing methodology to learn more.
Paid
7.8/10
User ExperienceRanked #16 out of 61 VPNs for User Experience
Best Rating
9.9/10
Average Rating
7.0/10
Worst Rating
2.0/10

We calculated this rating by assessing the VPN’s ease of use, interface design, and setup process across multiple platforms.

Read our VPN testing methodology to learn more.

Proton VPN looks great on every platform, and it’s very straightforward to use if you just want to ‘set and forget’ the app. Despite there being so many advanced features, Proton VPN has done a great job of explaining what each feature means with the help of various labels and tooltips. Some items could do with even further clarification, but we think you’ll be able to use it without ever running into a serious issue.

You can see a summary of the differences between Proton VPN’s apps in the table below:

Desktop & Laptop (Windows & Mac)

Proton VPN’s apps are dominated by a large world map from which you can browse all of its server locations and connect to the one you want.

If you don’t like map interfaces (we think it’s a bit confusing and a waste of space) then you can resize the app down to a skinny window that’s similar to its mobile app.

As is so often the case with VPNs, the Windows VPN client is the most complete.

Proton VPN's apps for Windows and macOS

The app for PC includes all of Proton VPN’s advanced features, including a VPN kill switch, split tunneling, and ‘alternative routing’ — a feature that bypasses some blocked websites by routing connections to different Proton VPN servers.

The macOS client recently added support for OpenVPN, WireGuard, and alternative network routing, which is a big improvement over previous versions. However, it does not support split tunneling.

Proton VPN is just an all-round good-looking app that feels like a premium product when you’re using it — something we think a lot of VPNs miss the mark with. The free version also looks and feels exactly the same.

Mobile (iPhone & Android)

The Android app is the best of Proton VPN’s mobile apps — it has most of the same features as the Windows version.

Proton VPN's apps for Android and iOS

Both of Proton VPN’s mobile apps are well-designed and feel responsive to use.

The Android VPN app includes an ‘Always-on’ feature, which automatically re-establishes a VPN connection in the event of a drop. In our tests, this turned on too late and failed to protect our IP address.

In contrast, the iOS app is a lot more limited, and doesn’t include split tunneling or alternative network routing. ‘Always-on’ is there, though, and it’s still just as easy to use.

Linux

Proton VPN has developed native VPN software for Linux, with a full graphical user interface (GUI). This is rare among VPN services, and worthy of praise.

Proton VPN's app for Linux

It looks much better and is much easier to use than VPNs that run in the Linux command line, like ExpressVPN. Proton VPN for Linux is supported on the following distros:

  • Debian 10+
  • Ubuntu 20.04 (LTS)+
  • Mint 20+
  • MX Linux 19+
  • Kali Linux
  • Elementary OS 6.0+
  • Fedora 34+
  • Arch Linux/Manjaro

Android TV & Fire TV

Proton VPN has well-designed and intuitive apps for Android TV and Fire TV. Countries are conveniently categorized by continents, making it quick and easy to locate the location you want to get an IP address from.

Proton VPN's app for Fire TV

For logging in, Proton VPN requires you to manually input a URL on a device where you’re already using it. We prefer the login method of other VPNs, like ExpressVPN and NordVPN, where you can scan a QR code using your phone’s camera.

Both apps use WireGuard and ChaCha20 encryption. However, one major downside is that it doesn’t include a kill switch.

That means if you’re torrenting or streaming while using Proton VPN on your Firestick or Android TV box, your IP address could be exposed should the connection drop.

Profiles Feature Is Useful & Convenient

The most unique aspect of Proton VPN’s apps is its ‘Profiles’ feature. Profiles allows you to create a unique VPN connection to exactly suit your needs through a custom combination of settings and features.

Profiles allows you to choose from the type of server, the server location, and whether you want to connect to a specific server.

For example, if you know there is a specific server that always works with US Netflix, Profiles allows you to create a shortcut to that specific server that will remain pinned to the top of the app.

This is an advanced feature that’s meant for power users, but it’s also one of Proton VPN’s very best.

Creating a profile within Proton VPN that would make streaming US Netflix quicker and easier.

Profiles let you pre-select specific servers from specific regions.

Torrenting

Free
0.0/10
TorrentingRanked #53 out of 23 free VPNs for Torrenting
Best Rating
9.7/10
Average Rating
6.2/10
Worst Rating
0.0/10

We calculated this rating by assessing the VPN's torrenting features, including P2P servers and port forwarding support. We also evaluated its average bitrate and stance on file-sharing.

Read our VPN testing methodology to learn more.
Paid
9.2/10
TorrentingRanked #4 out of 61 VPNs for Torrenting
Best Rating
9.7/10
Average Rating
6.2/10
Worst Rating
0.0/10

We calculated this rating by assessing the VPN's torrenting features, including P2P servers and port forwarding support. We also evaluated its average bitrate and stance on file-sharing.

Read our VPN testing methodology to learn more.

Proton VPN is a great VPN for safe torrenting, even if it’s not quite as good as rivals like PIA or Mullvad. We love that it offers P2P-optimized servers, port forwarding to boost seeding speeds, and we found its kill switch to be 100% reliable. With an average bitrate of 9.7MiB/s, it also delivers fast downloads. Proton VPN Free cannot be used for torrenting, though — it’s blocked on all servers.

Torrenting AttributeProton VPN FreeProton VPN
Permits P2P TrafficNoYes
Average Download BitrateN/A9.7MiB/s (3% loss)
Countries with P2P Servers0112
Port ForwardingNoYes
Kill SwitchYesYes
Logging PolicyNo LogsNo Logs

Our P2P tests found that torrenting with Proton VPN is private, secure, and fast.

Using Proton VPN to safely download a torrent file

Proton VPN hid our P2P activity from our ISP.

All Proton VPN’s server locations allow torrenting through P2P VPN redirect, which means that your traffic may be securely re-routed to a server closer to you for better download speeds.

There are also high-performance servers specifically optimized for torrenting — they’re clearly marked within the app, but you can torrent on any server you like.

Proton VPN torrenting

Proton VPN includes servers optimized for P2P activity.

Proton VPN has recently increased the number of these P2P-optimized servers, improving the spread of their locations. There are now torrenting-optimized servers in 85 countries, compared to just 20 previously.

However, while testing these, we noticed almost zero difference in download bitrates between P2P-labeled servers and regular servers.

Whichever server you choose and wherever you are in the world, Proton VPN is a great torrenting VPN — we just wish you could use the free version for it, too.

Proton VPN Supports Port Forwarding

Proton VPN is one of only a few VPNs that support port forwarding. Using this, you can bypass the NAT firewall on your router and transfer files faster.

Enabling port forwarding within the Proton VPN app

Port forwarding can be enabled from the app home screen.

Proton VPN is a fast torrenting VPN anyway, but port forwarding increased our P2P speeds by 10%. The only downside is that it’s currently only available on the Windows app. We hope Proton VPN adds it to other platforms soon.

Device Compatibility

Free
7.2/10
Device Compatibility
Best Rating
9.9/10
Average Rating
6.0/10
Worst Rating
1.0/10

We calculated this rating by evaluating the VPN's support for various devices. We considered dedicated apps, browser extensions, Smart DNS functionality, and router compatibility.

Read our VPN testing methodology to learn more.
Paid
7.9/10
Device Compatibility
Best Rating
9.9/10
Average Rating
6.0/10
Worst Rating
1.0/10

We calculated this rating by evaluating the VPN's support for various devices. We considered dedicated apps, browser extensions, Smart DNS functionality, and router compatibility.

Read our VPN testing methodology to learn more.

Proton VPN has apps for Windows, macOS, iOS, and Android. We love that it also has a fully-featured GUI app for Linux. You can use Proton VPN on up to 10 devices at once on its paid plan or three on its free plan - that's pretty generous. Alternatively, you can install Proton VPN on a router that supports OpenVPN as a client - but this is cumbersome and can lead to slower speeds.

WindowsYes
MacYes
iOSYes
AndroidYes
LinuxYes
Amazon Fire TVYes
Android TVYes
Apple TVNo
RouterYes
ChromeYes

Simultaneous Connections: 10

Proton VPN doesn’t have a Smart DNS feature for unblocking video content on devices like Apple TV or PlayStation, which makes it much more difficult to use.

The only workaround is to install Proton VPN on your home router, but it’s unlikely your router is supported. The full list of compatible router models is available on the support section of Proton VPN’s website. Your router’s firmware needs to be one of the following types:

  • AsusWRT
  • DD-WRT
  • OpenWRT
  • pfSense
  • Tomato
  • FreshTomato
  • Vilfo

Alternatively, you can buy a router pre-flashed with Proton VPN. This removes the difficult set-up process, but is expensive.

If you really want to use a VPN for streaming via games consoles and other such devices, we strongly recommend just using a VPN with a good Smart DNS service instead — CyberGhost and ExpressVPN are both excellent choices.

Additional Features

Free
3.5/10
Additional Features
Best Rating
9.9/10
Average Rating
3.3/10
Worst Rating
0.2/10

We calculated this rating by evaluating the VPN's extra capabilities beyond the basic VPN service. This includes bypassing censorship, additional tools like malware blockers, and customization options like split tunneling.

Read our VPN testing methodology to learn more.
Paid
5.9/10
Additional Features
Best Rating
9.9/10
Average Rating
3.3/10
Worst Rating
0.2/10

We calculated this rating by evaluating the VPN's extra capabilities beyond the basic VPN service. This includes bypassing censorship, additional tools like malware blockers, and customization options like split tunneling.

Read our VPN testing methodology to learn more.

Proton VPN’s suite of features is impressive, though we found they didn’t always work well. Despite using the NetShield ad blocker, we still encountered ads, and the multi-hop servers significantly slowed down our connection more than other VPNs we tested. None of these extra features are available on the free plan.

Additional FeatureProton VPN FreeProton VPN
Split TunnelingYes Yes
VPN ObfuscationYes Yes
Multi-Hop ServersNo Yes
Dedicated IPNo No
Ad BlockerNo Yes

Split Tunneling

With split tunneling, your VPN creates a separate tunnel that goes directly through your ISP, just like you weren’t using a VPN at all.

This feature is particularly useful for retaining compatibility with devices and services that require a local IP address, like a wireless printer, for example.

Proton VPN includes split tunneling on its Windows and Android app, but it isn’t included on macOS or iOS. To use it, simply toggle on the apps that you want to be excluded from the encrypted VPN tunnel.

Proton VPN's split tunneling setting interface

Proton VPN’s split tunneling setting interface.

We tested split tunneling and were able to access devices on our local network, all while using a Netherlands VPN server to safely download a torrent file.

EXPERT ADVICE: All apps you exclude from the VPN tunnel will use your true IP address. Never use this setting for sensitive activities, like when using free public WiFi.

Proton VPN’s IP & DNS Leak Test Results

Before trusting a VPN with your sensitive data, conducting a real-world IP and DNS leak test is a good way to verify the VPN is working properly.

All of Proton VPN’s apps include IPv6 and DNS leak protection, but we needed to verify these tools actually work. We ran these tests using Proton VPN on both macOS and Android.

To test for any IP address leaks we connected to several Proton VPN servers, including the US, South Africa, Germany, and Australia. Proton VPN didn’t leak our true IP address on any server.

Proton VPN didn't leak our IP address in our tests

Proton VPN didn’t leak our IP address in our third-party tests.

We then used our IP and DNS leak testing tool to test Proton VPN for any DNS leaks. DNS leaks occur when your browser routes DNS requests through your ISP instead of the VPN, but we experienced no DNS leaks with Proton VPN.

This is no surprise, as Proton VPN operates its own DNS servers, and therefore directly handles your DNS requests. This removes the risk of leaks from third-parties.

Proton VPN didn't suffer DNS leaks in our tests

Proton VPN didn’t suffer DNS leaks in our tests.

NetShield Is a Poor Ad Blocker

Proton VPN Plus and Unlimited subscribers have access to NetShield, the company’s ad, malware, and tracker blocker. You can enable this by clicking on the shield icon from the app home screen.

We found NetShield stops malware and trackers effectively, but it was very poor at blocking ads.

Testing Proton VPN's built-in ad and tracker blocker, NetShield. It returns a 27% success rate with the d3ward ad block testing tool

Running NetShield through d3ward’s ad block test tool it reported just a 27% success rate.

Unlike other ad blockers, NetShield doesn’t fully prevent advertising elements from showing on web pages. Instead, it replaces them with a gray box, which is an eyesore.

On top of this, NetShield only works when you’re connected to a Proton VPN server. Therefore, you’ll have to stay constantly connected to Proton VPN to stop ads from showing.

Proton VPN’s Secure Core Servers

Proton VPN owns servers in 68 of its locations. These make up its Secure Core network.

This feature — only available on Plus and Unlimited plans — bounces traffic via a Secure Core server before relaying it onto another server in Proton VPN’s network.

This feature is an example of Double VPN, also known as Multi-Hop. Double VPN typically routes your traffic through two VPN servers instead of one, increasing your security.

Because Proton VPN owns and has sole access to these servers, Secure Core is even more secure than similar solutions like NordVPN’s or Surfshark’s Double VPN.

It wasn’t long ago that Secure Servers only existed in three countries – it’s great to see Proton VPN expanding that number so frequently.

An Image Showing Proton VPN's Secure Core Servers on its iOS app

Proton VPN’s Secure Core servers setting in the iOS app.

The drawback of using Secure Core servers is that they noticeably slow down your internet speed.

Below are the download speed reductions connecting from the UK to UK and US normal servers compared to secure server connections:

Normal Server:

  • US: 87Mbps (13% loss)
  • UK: 89Mbps (11% loss)

Secure Core Server:

  • US: 30Mbps (70% loss)
  • UK: 18Mbps (82% loss)

Download speeds are much slower using the Secure Core network given the increased encryption overhead and the extra distance the data has to travel.

Additional Security Features We’d Like to See

  • A seriously improved ad blocker. As demonstrated above, NetShield just isn’t good enough. We like that it’s included in the app, but Proton VPN desperately needs to improve it.
  • A working Stealth protocol. Currently, Proton VPN does not reliably work in China, despite having Stealth protocol available. We’d like to see it improved to the point where it works consistently to beat the Great Firewall.
  • An advanced kill switch. With Proton VPN’s kill switch activated as it is, you have no choice but to lose access to your local network and all the devices on it. A more advanced version could add some customization there.