From April 2014 to March 2015, Kaspersky Lab security solutions for Android protected 35,413 users from mobile ransomware. A year later the number had increased almost four-fold to136,532 users. The share of users attacked with ransomware as a proportion of users attacked with any kind of malware also increased: from 2.04% in 2014-2015 to 4.63% in 2015-2016. The growth curve may be less that that seen for PC ransomware, but it is still significant enough to confirm a worrying trend.
The geography of mobile ransomware is quite similar to the one for PC ransomware, with a few notable differences. In 2014-2015 the percentage of mobile users attacked with ransomware was fairly low, much lower than that seen for PCs.