Avoid spying FCM (former GCM, Google Cloud Messaging)
Google's Firebase spying framework is in direct opposition to the interests of users who want security (security includes privacy).
Chatsecure need's a message delivery system that respects users privacy.
JKAbrams shared this idea
Nathan “n8fr8” Freitas commented
We aren't using GCM or Firebase, so not sure what you are talking about.