There may be a dozen or more free VPN services available,many of them violate your privacy by keeping logs or your activities and tracking you. A few may even insert unwanted pop-up ads and even malicious malware into your computer. Free is sometimes worth what you pay for it… or even less.
Gavin Phillips has written an article that describes six VPNs that take your anonymity seriously. He writes, “A truly private and anonymous service does not maintain any logs detailing your Internet use while connected to their servers. They should actively ensure your personal details remain private, offer a consistently encrypted Internet connection, and ideally operate their own DNS to further alleviate any external logging that usually takes place.”
You can find Gavin Phillips’ article on the MakeUseOf web site at http://www.makeuseof.com/tag/6-logless-vpns-take-privacy-seriously/.
By the way, Phillips’ describes Private Internet Access as the first solution on his list. I have been using Private Internet Access for nearly two years and am pleased with it. I wrote about Private Internet Access at https://privacyblog.com/2015/01/30/private-internet-access-an-easy-to-install-vpn-for-windows-macintosh-android-ipad-and-iphone/.