Forum Discussion

Iron Contributor

Aug 27, 2020

FCM Message Notifications

A couple of our users received random notifications on the Teams mobile app this morning. The notification states "FCM Message". Anyone have an idea what's going on?

microsoft teams

Copper Contributor

Aug 27, 2020

SuleimanDC

Microsoft just sent this out so they are investigating.

Raffe80
Copper Contributor
Aug 27, 2020
ashleyw1490

Do you have the link for that alert? I would like to see if any updates.
- Mike Sharratt
  Copper Contributor
  Aug 27, 2020
  Raffe80
  if you have access to the office365 admin portal it can be found on this page https://admin.microsoft.com/AdminPortal/Home#/servicehealth
- ashleyw1490
  Copper Contributor
  Aug 27, 2020
  Hi Raffe80
  
  That was a screen shot from our 365 service health page,
  
  This is the latest:
Bmandad4u
Copper Contributor
Aug 27, 2020
ashleyw1490

That document has multiple spelling and grammatical issues. I wouldn't trust it.
- erroreki
  Copper Contributor
  Aug 27, 2020
  Bmandad4u
  If you say so.
  Three news articles about this:
  https://cybernews.com/security/exposed-google-keys-leaves-billions-of-users-open-to-mass-spam-and-phishing-notifications/
  https://portswigger.net/daily-swig/google-firebase-messaging-vulnerability-allowed-attackers-to-send-push-notifications-to-app-users
  https://code2care.org/q/fcm-messages-test-notification-microsoft-teams-google-hangouts-push-alert-firebase
  The people that found the exploit:
  https://twitter.com/y_sodha
  https://twitter.com/absshax
  
  EDIT: I'm also not too hasty to say that something written in a language that isn't the writers native tongue is untrue. Not everyone is blessed with the understanding of all languages in the world

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