First, use a virtual private network, or VPN. For a little bit of money, the best VPNs can hide your true location so that it looks like you're surfing the Web as somebody else, and encrypt your internet traffic so that nobody outside of the VPN can tell what you're looking at. Other tools, such as Tor, mask your identity by sending your internet traffic bouncing through a whole bunch of other intermediary servers before arriving at its destination. Think of it as the online equivalent of losing a tail in a spy movie. These services are not cure-alls: They may cause your browsing speeds to drop, and some websites block VPNs altogether. That includes Netflix, which does this to defeat people who want to watch videos illegally. Finally, they don't thwart any snooping software that an internet provider may have installed on your own device, logging your activity locally.