The plugin contains the leaks test package: – DNS leak test – WEBrtc IP leak test – Email IP leak test The plugin integrates with https://bash.ws, a 3rd party service, to have it do the VPN testing. The service is free to use and does not require an API key and/or registration, see terms of use https://bash.ws/terms. The plugin essentially makes a remote request (POST) to a service URL, passing an user IP address as a parameter. Depending on the test the following additional data are received by the service: – DNS leak test: the plugin does several DNS-lookup requests to the service; – WEBrtc IP leak test: the plugin receives additional IPs from the Internet browser; – Email IP leak test: the plugin asks user to send an empty email to the service.