First and foremost, using a VPN prevents anyone on the same network access point (or anywhere else) from intercepting your web traffic in a man-in-the-middle attack.
This is especially handy for travelers and for those using public Wi-Fi networks, such as web surfers at hotels, airports, and coffee shops, but not limited to.
Someone on the same network, or the person in control of the network you're using, could conceivably intercept your information while you're connected. A 2019 survey noted that just 19 percent of respondents use a VPN while traveling, which is a dismal result from a security standpoint.
VPNs also cloak your computer's actual IP address, hiding it behind the IP address of the VPN server you're connected to. IP addresses are distributed based on location, so you can estimate someone's location simply by looking at their IP address. And while IP addresses may change, it's possible to track someone across the internet by watching where the same IP address appears. Using a VPN makes it harder for advertisers (or spies, or hackers) to track you online.
Many VPN services like ours, also provide their own DNS resolution system. Think of DNS as a phone book that turns a text-based URL like "pcmag.com" into a numeric IP address that computers can understand. Savvy snoops can monitor DNS requests and track your movements online. Greedy attackers can also use DNS poisoning to direct you to bogus phishing pages designed to steal your data. When you use a VPN's DNS system, it's another layer of protection.
VPNs are necessary for improving individual privacy, but there are also people for whom a VPN is essential for personal and professional safety. Some journalists and political activists rely on VPN services to circumvent government censorship and safely communicate with the outside world
What about using a VPN for BitTorrent? Some services allow peer-to-peer file sharing and the use of BitTorrent sharing. Others restrict such activity to specific servers. Be smart: Learn the company's terms of service—and the local laws on the subject.
So what did our poll find when it comes to what sorts of online habits respondents actually use VPNs for? In a survey of 3,000 US consumers on VPN use and buying habits, we found that a majority—52 percent of respondents—said they need a VPN for security purposes. In related responses, 26 percent said they need a VPN to safely access public Wi-Fi, and 18 percent need a VPN to share data and files securely. Another marquee feature of VPNs is anonymous web browsing, yet only the most Big Brother–conscious 6 percent of respondents said they need a VPN to avoid government surveillance. Aside from privacy and security reasons, VPNs are also useful in accessing entertainment content not available in your region by switching to a server somewhere else in the world. A sizable 23 percent of respondents said they need a VPN to access streaming content or sports, while 4 percent of respondents use VPNs to access adult content.
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