If you use public networks regularly, you need a VPN. Many antivirus packages include one. Unsecured public networks are a hacker's dream, and we're surrounded by such networks every day from your local coffee shop to the airport or hotel you visit. Connecting to public networks requires no authentication, so hackers are easily able to get in and cause trouble. A VPN adds a level of encryption by having you connect to a secure server and giving you an extra layer of safety. By doing so, you can be kept safe from people eavesdropping on your browsing activities. Plus, they're great for watching exclusive Netflix offerings that are specific to other countries, as a little bonus.