A VPN, or Virtual Private Network, is a service that creates a secure, encrypted connection between your device and the internet. It works by routing your internet traffic through a remote server operated by the VPN provider before it reaches its destination. When you connect, your data is wrapped in a layer of encryption, turning it into unreadable code. This process hides your real IP address and replaces it with the IP address of the VPN server. Essentially, it creates a private "tunnel" for your online activity, protecting your data from anyone trying to snoop on your connection, such as hackers on public Wi-Fi or your internet service provider.