A VPN or virtual private network connects two devices privately and securely over an unsecured public network - such as the Internet. VPN uses different types of protocols to securely encrypt the connection, preventing it from hacked or monitored. The protocols are designed to create a virtual tunnel between the 2 devices, and are often referred to as 'tunneling protocols' - the tunnel is then used to feed all of the communication between the devices through, and in doing so, makes the communication inside the tunnel almost impossible to access for hackers, snoopers and government agencies. A VPN connection is the most secure way you can connect to Internet and we strongly recommend you use one for everyday browsing, most importantly though, you absolutely must use a VPN connection when browsing the Internet over Public Wifi. Public Wifi is the least secure type of internet and leaves users vulnerable to attacks/hacks from other users on the network, and even by the network owner themselves. The network owner can monitor and see all traffic across their network - that is, unless you use a VPN connection!