An iPad disconnected from the Internet
The basic idea of a virtual private network (VPN) service is that your connection is more private. Using a secure encrypted VPN connection, your online actions are not able to be monitored by other web traffic.
However, there are occasions where you may not have the protection of a VPN. Rather than the encrypted tunnel to a different server, you may suddenly find yourself directly accessing the internet without the VPN.
Go Here to Read this Fast! What a VPN kill switch is, and why you need it
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What a VPN kill switch is, and why you need it