Recently I noticed I have opera browser installed. I definitely did not install it because I was sleeping at that time. I checked installation time and revealed it was the day before yesterday
Checking installation source like this outputs
adb shell dumpsys package com.opera.browser | grep -e "installerPackageName"
so I don't know whether it was through Play Store or through APK.
Can I found out who have done this and how can I prevent future intrusions?
P.S. I have MIUI 11.0.3 Global device