IIRC It requires allowing apps to mimic other app's signatures and pretend to be them, "signature spoofing". MicroG mimics the Google play services signature.
But that is really crippling, because apps can now spoof other apps signatures, essentially apps can pretend to be other apps. That opens a lot of opportunities for an attacker.
But that is really crippling, because apps can now spoof other apps signatures, essentially apps can pretend to be other apps. That opens a lot of opportunities for an attacker.