AVG Secure VPN has below-average security features and protocols. However, it uses military-grade AES-256 encryption but lacks other advanced features. It uses IKEv2/IPSec, L2TP/IPSec, and OpenVPN (TCP/UDP) protocol.
The VPN uses different protocols for different platforms. OpenVPN (UDP) and Mimic for Android, L2TP/IPSec, and Mimic for MacOS, whereas IKEv2/IPSec and Mimic for iOS. However, the service doesn’t provide the WireGuard protocol, which is considered a state-of-art protocol.
Mimic is the proprietary protocol exclusively owned by Avast. Since it is only made and used by the company, it isn’t audited or a trusted source. Furthermore, the VPN uses a kill-switch feature that protects your IP address if your connection suddenly drops. The VPN ensures you won’t experience DNS, IP, or WebRTC leaks when using the service.