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A Virtual Private Network (VPN) is a service that creates a safe, encrypted online connection. Internet users may use a VPN to give themselves more privacy and anonymity online or circumvent geographic-based blocking and censorship. VPNs essentially extend a private network across a public network, which should allow a user to securely send and receive data across the internet.

Source: https://searchnetworking.techtarget.com/definition/virtual-private-network