VPN stands for Virtual Private Network. Essentially, a VPN creates a private and secure network, which then extends across your entire network connection. It offers you a way to remain anonymous online, while securing any data that passes over the connection.
Before any data passes over a network connection first it’ll pass through the VPN. The VPN will then encrypt the traffic and pass it on.
This helps to diminish or completely reduce a lot of the most common security risks you’ll run into online.