Similar to other low-tier free VPNs such as SuperVPN, SkyVPN reveals hardly any details about security on its website or app. We are extremely concerned about the lack of information about the app’s security.
SkyVPN’s website claims that the VPN uses AES-256 encryption. However, when we used Wireshark to test whether SkyVPN encrypted our traffic, we found that our traffic while connected to SkyVPN was left unencrypted.
SkyVPN failed to encrypt our browsing activity.
As you can see in the screenshot of our test above, Wireshark was able to detect that we visited our test website, even when SkyVPN was active.
Essentially, SkyVPN fails to perform the basic function of a VPN service. Anyone intercepting your connection — including your ISP — will be able to see the web pages you visit and any other information you transmit online.
There’s also no public information regarding SkyVPN’s chosen VPN protocol, so we have no idea whether it’s OpenVPN, IKEv2, or possibly something far less secure, such as PPTP.
Combined, this lack of transparency and the total absence of functional encryption makes SkyVPN one of the most unsafe VPNs we’ve ever tested. For these reasons, we strongly suggest staying away from this appalling VPN service.
Kill Switch Stops IP Address Leaks on Windows
In our tests, SkyVPN successfully prevented our IP address from leaking when our connection dropped and when we switched between server locations.
Our kill switch test tool didn’t detect any issues with SkyVPN’s kill switch on Windows.
We’re glad to see SkyVPN’s kill switch works on Windows, but it isn’t available on any other platform. In comparison, Proton VPN Free offers a functioning kill switch on desktop and mobile, so your IP address will be protected on all of your devices.
No IPv4, IPv6, or WebRTC Leaks
In our VPN leaks test, we found no major red flags. We are slightly concerned that SkyVPN uses Google DNS servers, but this isn’t unusual for lower-tier or medium-tier VPNs.
The majority of VPNs that own first-party DNS servers are top-tier VPN services like ExpressVPN.
SkyVPN didn’t completely pass our VPN leaks test.
SkyVPN didn’t leak our IP address, geolocation, or WebRTC details, but we still don’t recommend using the VPN. While it might work to hide your IP address temporarily, it doesn’t encrypt your data, and it logs a lot of other personally identifying information.
IP Leak Protection & Split Tunneling Available
SkyVPN does offer some other basic features on Windows, like IP leak protection and split tunneling (called Smart VPN). However, the majority of the time its 600MB data cap makes the app so unusable that these features aren’t worth it.
It’s worth noting that these are the bare minimum when it comes to advanced features in VPN services. There are simply much better free VPNs available with fully-featured apps.
Security Features We’d Like to See
SkyVPN is an unsafe VPN and needs to add a lot more features to its security suite. Here’s some absent features we’d like to see added to its apps:
- Functional kill switch on iOS and Android to prevent accidental data leaks.
- OpenVPN or WireGuard protocols.
- Data leak protection on iOS and Android.
- Functional AES-256 encryption on all apps.
- Open-source software code to improve transparency and allow users to analyze SkyVPN’s security.