The number of Android users attacked by banking malware saw an alarming 300% increase in 2018. 1,799,891 of users had been impacted by at least one Android banking malware family. 85% of the attacks were conducted by bad actors using only three banking malware families. Zbot and Gozi are still the most widespread banking malware, followed by SpyEye and RTM. Malicious mobile software attacks on Windows desktops also increased by 15.9% in 2018, according to Kaspersky Lab.
Source: https://www.bleepingcomputer.com/news/security/18-million-users-attacked-by-android-banking-malware-300-percent-increase-since-2017/

