A Virtual Private Network (VPN) is an encrypted internet connection that adds an extra layer of privacy and security to your online activity. It’s the equivalent of installing tinted two-way glass throughout your glass house, allowing you to see out, but no one else to see in. When you use a VPN, your data is sent through an encrypted tunnel to the VPN servers, and no one, not even your internet service provider or the government, can access it.
This private internet access also protects your online identity - your device’s real IP address is hidden by the IP address of the VPN server. This allows you to safely use the internet anywhere in the world, even on public Wi-Fi networks.
See more here: https://www.opera.com/products/vpn-pro/explained