Virtual private networking (VPN) companies market their services as a way to prevent anyone from snooping on your Internet usage. But new research suggests this is a dangerous assumption when connecting to a VPN via an untrusted network, because attackers on the same network could force a target’s traffic off of the protection provided by their VPN without triggering any alerts to the user.
This is the only place they mention kill switch. I feel like it needs a slight clarification on whether it was enabled and didn’t work, or if was just disabled and therefore not “engaged”.
The Killswitch only checks that VPN is up, not whether traffic is correctly routed over it.