Link: Business Insider
Date: 2021-09-11

Why

They do not need to tell us everything honestly because who will find out. They do this to moderate content but we can also assume to collect data as well.

How

Using contractors and third parties to read and moderate messages provided by Facebook.

Opinion

It is near impossible to find a real private messaging system. If messages are going through a profit driven corporation you can assume they are not as private as you think.