A virtual private network, better known as a VPN, gives you online privacy and anonymity by creating a private network from a public internet connection. VPNs mask your internet protocol (IP) address so your online actions are virtually untraceable. Most important, VPN services establish secure and encrypted connections to provide greater privacy than even a secured Wi-Fi hotspot.

A virtual private network is a key privacy tool that you should use when you’re logging onto the internet from a public place such as a coffee shop, hotel lobby, or any other spot that offers access to free public Wi-Fi." From Norton Antivirus' website

There are a multitude of VPN's floating around and one must always be careful in choosing a legitimate one and one based on ones needs and wants.  

What is a VPN? | Virtual Private Networks Explained | Norton

You can read the full article and many on the benefits of using a VPN and if its something that you may want to use.