Kill Switch is a feature that detects an unexpected disconnection of the VPN and does not pass traffic directly.
This avoids sniffing data and revealing the real IP address without your knowledge.
We recommend using this feature if VPN disconnection is a concern for you.
Kill Switch is supported by apps for Windows and iOS.
On iOS, you don't need to take any action to activate the feature - it works by default and is implemented at the operating system level.
In the Windows app, the function must be activated in the settings: