Do you have Lolipop, Nougat or Marshmallow (I meant Android OS, NOT those tasty eatables) then you should read this. it seems 77.5% of Android systems at risk.

Since a majority of Android devices nowadays have these three versions of the OS, therefore, around 77.5% of the Android devices are at risk.

The MediaProjection service can be exploited due to a critical flaw. The service is designed to capture user’s screen and record system audio.


Android’s MediaProjection service has existed since long, but apps needed root access and signed up with the release keys of the device in order to use the service
But when Android Lolipop 5.0 was released, Google made this service open to everyone but did not secure it with the requirement of permission from the users

For More
https://www.hackread.com/android-flaw-lets-attacker-capture-screen-record-audio/