The connection between your device and the VPN server is encrypted, preventing your internet service provider (ISP) from seeing the contents of your data as it travels between them. A VPN app connects your device to a VPN server, which is run by a VPN provider (such as Proton VPN). It connects your computer, smartphone, or tablet to another computer, called a VPN server, via an encrypted “tunnel” that protects your data from prying eyes. What is a VPN?Ī virtual private network (VPN) is a suite of technologies, the primary aim of which is to improve your privacy when using the internet. Our sister article, How does a VPN work?, provides a more detailed and technical overview of what is going on under the hood. 
This article explains what VPNs are, what they do, and whether you need one.
An almost daily drumbeat of data breaches and online privacy violations has fueled public interest in VPN services such as Proton VPN.
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