One of the most dangerous threats targeting mobile users is the banking malware. These malicious pieces of code are designed to steal financial information and transfer funds to their own accounts. Over the years, perpetrators successfully managed to overcome all obstacles set before them, such as the 2-Factor-Authentication security mechanism and defenses set in different Android versions.

http://blog.checkpoint.com/2017/05/16/the-mobile-banker-threat-from-end-to-end/