Pornhub is offering a free VPN service so you can keep your porn-browsing activities private.

The new service, VPNhub, is available on iOS and Android for free. Pornhub created it to help visitors prevent their internet activities leaking to untrusted Wi-Fi networks, like at a coffee shop, and to also get access to region-locked adult video sites.

"Here at Pornhub, with 90 million visitors a day, the vast majority of whom are using devices on the go, it's especially important that we continue to ensure the privacy of our users and maintain their confidentiality," said Pornhub vice president Cory Price in a statement.

The VPN service offers unlimited bandwidth with access to servers in over 15 countries. However, the free version comes with some limitations. When PCMag tried it on an Android smartphone, the app only gave us access to servers based in Los Angeles, California. The free version will also display ads.

To get access to more servers, you'll have to pay for a premium subscription, which can cost $11.99 a month, or $6.25 a month if you pay up front for a full year.

A premium subscription will also remove the ads, and let you access the PC and Mac clients for the VPN services.

Pornhub has been promoting the VPN as a way to protect your privacy. But there are some caveats. According to the VPNhub's privacy policy, the service will not sell or rent your personal information to others. Nevertheless, it can still share "aggregate or non-personally identifiable information" with third parties for advertising, marketing, or research purposes.

Given that the service also offers a premium subscription, it could end up becoming a revenue generator for Pornhub. On Thursday, the porn site began promoting VPNhub with a few amusing ads highlighting the benefits of its use.

For the uninitiated, a VPN (which stands for virtual private network) can encrypt your internet traffic over your broadband provider. This can prevent the ISP or anyone else on the network, like hackers, from snooping on your internet activity.

PCMag has a guide for readers looking for recommendations on VPN services.

UPDATE 5/29/18: Pornhub has been promoting VPNhub as its own product, but the service was actually built with the help of WLVPN, a third-party provider of "white label" VPN solutions.

A security researcher, Will Strafach, examined the VPNhub app and noticed it was using the IT infrastrucure from WLVPN, which specializes in helping companies build out their VPN services.

"Slightly disappointed in the way VPNHub is being hyped versus the reality," Strafach later tweeted. "PornHub can't be hurting for cash/resources and I would have no doubt they could do a far better job in-house if they wanted to."

In an email, Pornhub told PCMag: "Yes we have a partnership with them (WLVPN) to power our infrastructure. This is the IPVanish VPN server network."

Strafach also noticed that the VPNhub app was sending data to platforms run by Facebook, Google and others, presumbly for marketing purposes.

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