[mullen]

The very large company I work for banned all video conference software except for what is provided by the company. I don't think it is just about security, but make everyone use the same system(s) because it just got too confusing to communicate with other divisions or even departments. You can search for people in other divisions and then video chat with them if you want, or just plain old school voice chat.

Luckily, the software we are required use works pretty well on iOS, Android, OSX and Windows.