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A VPN, or Virtual Private Network, is a service that creates a secure, encrypted connection over a network. This allows private data to be transmitted securely over the internet, keeping it safe from prying eyes. VPNs offer strong encryption, which makes it virtually impossible for hackers to intercept private data. This is especially important when using public wifi, as these networks are often unsecured and easy to access. Using a VPN, you can browse the internet anonymously and prevent websites and apps from tracking your data.