OpenVPN and WireGuard are tried-and-tested VPN protocols – but some VPNs still decide to build their own. Here’s what you need to know.
https://www.techradar.com/pro/vpn/why-do-vpn-providers-keep-making-their-own-protocols
https://www.techradar.com/pro/vpn/why-do-vpn-providers-keep-making-their-own-protocols