I had used vpn to avail certain services when I was in Mexico for a project. After my return, I uninstalled the service. Yesterday, I noticed that my friend was using vpn even though he doesn't require it. He told me that it helps to hide the identity. Later,  I searched for more details and I came across an article http://nci.ca/potential-risks-free-wi-fi-minimize-risk/ that says free Wi-Fi services harbors risks and how using vpn service can help in privacy and safety. Until now, I though it was used only to get certain exclusive internet websites of other nations. Will all services free or paid help in securing our search details from others?
Thanks.