Yes! In fact, ProtonVPN provides you with two fail-safes that can prevent data leaks if your VPN malfunctions for whatever reason. The first one is a “regular” kill switch that blocks internet access when ProtonVPN drops the connection. The second one is called the “permanent kill switch” and it doesn’t let you access the internet at all unless you’re connected to one of ProtonVPN’s servers. You can learn more about this essential feature in our full guide to VPN kill switch technology.