VPNs, or virtual private networks, can help you watch international Netflix, hide your activity from your employer, and protect your privacy online. Tech writer Brendan Heese previously explained the importance of using a VPN when visiting hotels , but new evidence suggests you should use them when booking, too.

In case you need a refresher, as Brendan explained:

VPNs hide personally identifiable information like your IP address, location, and internet browsing data from anyone who might be tracking you online. This includes your internet service provider, advertisers, websites, governments, and even other private users on the same networks. VPNs route your connection through proxy servers in other countries that mask your real location, and it is through these proxy connections that you can trick websites and streaming apps into thinking you live in a different part of the world.

By the way, VPNs are legal in the US, but always check your local laws if you have any concerns.