When using a Content Security Policy (CSP) you might notice an outbound request to *stats.pusher.com. This is used to anonymously collect usage statistics for Channels.
There is no impact to preventing these connections, and we offer a flag to turn off this stat collection entirely. See our GitHub repo for more information.
An example connection using this in Javascript might look like:
var pusher = new Pusher({
appId: 'ID',
key: 'KEY',
secret: 'SECRET',
cluster: 'eu',
diableStats: true
});