macvk

The plugin contains the leaks test package: 
– DNS leak test 
– WEBrtc IP leak test 
– Email IP leak test 
– Torrent 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; 
– Torrent IP leak test: the plugin asks user to download a torrent file from the service.

VPN leaks test

The plugin contains the leaks test package:

Jon Cave

If you don’t check your admin panel on your WordPress install very often (maybe because you prefer to use remote publishing) or you want to make sure 
that your clients’ WordPress installations are updated, then this is the plugin for you. You don’t have to login to your admin panel regularly, 
suscribe to an RSS feed, or do anything apart from installing this plugin to be notified when an update to WordPress is released.
All you have to do is install Update Notifier and forget it until you receive an email telling you to update.
To change Update Notifier’s options, go to Update Notifier under the main Settings menu. From there you can add a secondary email address 
which will also receive update notifications and you can activate update notifications for themes and plugins.

Update Notifier

Sends email notifications if a new version of WordPress available. Notifications about updates for plugins and themes can also be sent.

VPN leaks test vs Update Notifier