You can group the scenarios where using a VPN is important into two general categories: when accessing sensitive information or using insecure networks.
Public Wi-Fi networks are the most common example where VPNs provide additional security. Since anyone can join the network and you don’t know how it’s configured, someone could theoretically spy on what you’re doing using open Wi-Fi. There is also a risk that an attacker could create a fake network with the same name as a trusted network at a cafe or airport.
Running a VPN while using public networks creates an encrypted tunnel between you and what you’re accessing, helping protect your data from cybercriminals who may be hiding in these public spaces. The same logic applies to all websites that still don’t use a secure HTTPS connection. When connected over HTTPS, someone spying on the network can see that you are accessing the site, but cannot see what you enter. The vast majority of major sites default to HTTPS, but a VPN can provide a fallback for the fraction that doesn’t.
VPNs help hide your Internet activity from your Internet service provider. According to an FTC study, ISPs frequently collect information about your devices, internet history, network performance and usage habits, often selling this information to third parties. Using a VPN prevents your ISP from seeing what websites you visit and what you do, although it still knows you’re using a VPN and how much data you’re moving. However, VPNs don’t hide your entire search history; your browser always keeps a log of where you visit, and if you’re logged into your Google account, that profile keeps a log of your activity across its platforms.
These privacy concerns are doubly important when you’re traveling, especially if you’re in a location where internet access is monitored or restricted. In these cases, VPNs are a good way to maintain the privacy of responsible Internet use. Plus, it can help you access US streaming services abroad – streaming-enabled VPNs are a key travel hack if you’re mid-route. The Sopranos when departing for an international trip. Additionally, using your VPN to change your location can unblock catalogs of country-specific services like Netflix.
You may also want to use a VPN as a backup layer when accessing sensitive information, such as your email, bank account, or healthcare plan. While a VPN doesn’t guarantee that your information remains protected, it can help prevent man-in-the-middle attacks, where scammers steal your information in transit. This won’t prevent scammers from tricking you into revealing your banking details, but it could stop them from spying on your Amazon transactions. That’s why I always check that my VPN is working before accessing sensitive information on my phone or laptop.
