What is a VPN Kill Switch and How Does It Work? A virtual private network (VPN) kill switch is a critical feature that blocks internet access if you lose your VPN connection.
This seemingly innocuous feature safeguards your data by preventing DNS leaks and IP address exposure, but its effectiveness is far from foolproof.
In theory, a kill switch monitors your VPN connection and automatically cuts off internet access in the event of a drop or falter. However, in practice, things get more complicated.