A VPN (virtual private network) is a service that shields your internet traffic from outsiders by encrypting it from your device to the websites and services you are visiting. Someone intercepting your internet traffic will only see encrypted garbage. They will not know who or where you are or what sites you are visiting. They will not see your email traffic or what movies you watch. Not what you buy online or what games you play. Not if you are a criminal mastermind or a boring ordinary citizen. :-)
Using a VPN service may be a good idea when you connect to the internet via an unsecured Wi-Fi network, like in a coffee shop, on a train station or at a library. In those places you are at risk of someone eavesdropping on your Wi-Fi traffic to get information you probably want to keep private.
Most people are not using a VPN yet. Are you? Have you considered using a VPN service?
(Photo by Kristina Flour at Unsplash)