Proton VPN rolls out obfuscated VPN protocol to evade censorship

Proton VPN in use on a smartphone
(Image credit: Proton VPN)

One of the best VPN services around right now, Proton VPN has just rolled out a new encryption protocol to better defeat censorship and evade VPN blocks. 

Its shiny new Stealth VPN protocol is perfect for those users living under strict internet restrictions as here authorities often block the use of such circumventing tools.   

After boosting its security infrastructure and the speed of its connections - with features like its Secure Core servers and VPN Accelerator, respectively - the Swiss-based provider now seeks to guarantee that all of its users around the world can fully enjoy improved internet freedom.

Unlock censored sites, while eluding VPN blocks

"As we have stepped up our efforts to build a more censorship-resistant VPN, authoritarian governments have also stepped up their efforts to block VPNs," said the provider in a blog post.

Proton's developers explained that previous projects trying to obfuscate existing VPN protocols have failed in the past to deliver a full and effective functionality.  

"We designed our Stealth protocol from the ground up to not have these issues. With Stealth enabled, your Proton VPN connection will be almost completely undetectable."

Proton's Stealth VPN protocol uses obfuscation tactics to hide the fact you're using its secure VPN service, making it look like normal traffic. You can learn more on how VPN obfuscation technology works in our dedicated explainer. 

It also establishes VPN connections in such a unique way that it manages to avoid alerting internet filters. 

"Stealth is an open source obfuscation protocol based on WireGuard and TLS. It is unique to Proton VPN and can be used to connect to all our servers (including our free servers)," the provider told TechRadar. 

Contrary to other advanced technology like NetShield and Secure Core, Proton Stealth protocol is available for both its free and premium plans, "because everyone deserves online freedom."

In terms of speed, the provider assures that the new protocol is optimized for delivering the best results. It is also compatible with its VPN Accelerator feature for premium users looking to boost their connection speeds even more.

Available only for Android at the time of writing, users will soon be able to enjoy the feature also on Windows, Linux, macOS, and iOS apps.

What about other VPN providers?

Proton VPN is only the most recent provider integrating obfuscation technology in its software to help users defeat censorship and escape VPN blocking - whether this comes from authoritarian governments or your school/work firewalls. 

Top VPNs ExpressVPN and NordVPN all have obfuscated servers carrying out a similar job. Surfshark has its very own Camouflage Mode, while on VyprVPN's offering comes under the name of Chameleon protocol.  

However, Proton said that its new Stealth protocol is just the start of its evolving battle to promote a free internet. 

"Accordingly, we designed Stealth to be an extensible and adaptable VPN protocol that is flexible enough to meet new challenges."

Chiara Castro
News Editor (Tech Software)

Chiara is a multimedia journalist committed to covering stories to help promote the rights and denounce the abuses of the digital side of life – wherever cybersecurity, markets, and politics tangle up. She writes news, interviews, and analysis on data privacy, online censorship, digital rights, cybercrime, and security software, with a special focus on VPNs, for TechRadar and TechRadar Pro. Got a story, tip-off, or something tech-interesting to say? Reach out to chiara.castro@futurenet.com

Read more
A hand holds a smartphone displaying the NordVPN logo
NordVPN launches new “revolutionary” censorship-resistant VPN protocol
VPN server logo with foggy mountain in the middle
What is obfuscation? Everything you need to know about VPN obfuscation technology
Screenshot of Obscura VPN website
Obscura VPN promises to “set the standard for the next-generation of VPNs”
ExpressVPN's Lightway Turbo upgrade – promo image
Can fast be faster? ExpressVPN promises it’s possible
VPN world map
119 countries saw VPN usage soar in 2024 during times of political crisis
ExpressVPN Lightway Protocol
ExpressVPN Lightway: Everything you need to know about the protocol
Latest in VPN Services
ExpressVPN's Lightway Turbo upgrade – promo image
Can fast be faster? ExpressVPN promises it’s possible
AdGuard VPN during TechRadar tests
AdGuard becomes the latest VPN to add post-quantum encryption
ExpressVPN's new Linux app interface
ExpressVPN releases a major upgrade to its Linux app
NymVPN ap on mobile – promo image
NymVPN officially launches and claims to be "the world’s most secure VPN"
ExpressVPN apps running on a laptop and mobile during TechRadar's testing
What's new in Lightway 2.0? Here are the 4 biggest changes I'm excited for
A VPN running on a mobile device
A new era for VPN testing? ATMSO publishes the first-ever testing standards in an "important milestone"
Latest in News
Google Gemini Flash 2.0 Images
I tried Gemini's new AI image generation tool - here are 5 ways to get the best art from Google's Flash 2.0
An image of the Samsung Galaxy S25 Ultra from a hands-on event
Samsung Galaxy S26 Ultra could resurrect an intriguing camera feature
Eurocom Raptor X18
At $15,000, this massive 256GB RAM laptop makes Apple's MacBook Pro look affordable, tiny and very, very slow
Cristin Milioti in Black Mirror season 7
Netflix launches trailer for Black Mirror season 7, giving us a look at its first-ever sequel episode and an unexpected returning character
A graphic of the PC Gaming Show
Get ready for a bounty of PC games on June 8, as the PC Gaming show is back
A close up of The Daily podcast from Pocket Casts' web page
‘Podcasting shouldn’t be locked behind walled gardens’: Pocket Casts slams Spotify and makes its web player free to all