What's strangest Android app

Mysterious pop-up messages: who is sending the "test" notifications on Android?

A strange push notification is currently popping up on the smartphones of more and more Android users. This appears via Google Hangouts, Microsoft Teams or other apps on the smartphone with the content "Test" or "Test Notifications !!!".

It suggests that these messages are related to the vulnerability in Google's Firebase Cloud Messaging that became known last week. Among other things, the platform provides the infrastructure for push messages. That reports that Technology portal heise.de.

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So far, however, it is still unclear whether this actually has anything to do with the security gap. Google and Microsoft are currently investigating the incidents. It is important for users to ignore the pop-ups and under no circumstances to follow any built-in links.

Also read: Why you shouldn't put your smartphone on the table: Study with surprising results

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