3 companies control many big-name VPNs: What you need to know

Let’s say you’re in the market for a VPN (virtual private network). You’re probably looking for some combination of better privacy (from snooping ISPs, advertisers or governments), increased online security (who knows who else is on that public Wi-Fi node?) or even more flexible video streaming options. Unlike mobile operating systems (two main options) or US mobile providers (three basic choices), you might be impressed with the range of VPN providers available to you.

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