A virtual private network (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.
Bear in mind though, that some VPN providers may log your activities and connections. You can see a comparison of VPN services here
Most important, VPN services establish secure and encrypted connections to provide greater privacy than even a secured Wi-Fi hotspot.
You should use a VPN:
When you are using a computer network you don’t own or control;
When you need to change your ‘geographical’ IP location;
When you need to be certain of a secure and encrypted connection to the Internet.
You will find links to VPN services here