I have an Android smartphone and my data connection is always enabled. I often use browsers like Opera Mini and UC Web as they are faster than the inbuilt browser apps. I often use Mobile banking services for several purposes. I have heard that the hackers can steal data from Android smartphones without my permission when my phone is connected to the internet.
How do I get to know that my private data is being accessed by others without my authorization?
Other than installing an Antivirus app, is there a way to prevent my smartphone from allowing access to my data? Like, is there any default inbuilt security option in Android smartphones as of such?