Re: Real numbers please.
Yes, quite.
I looked through the full PDF report, and although Bitdefender were more than happy to reveal real numbers for all ransomware (presumably most of which is on Windows), they were rather more coy about Android, delegating to only reveal percentages of reported infections.
It strikes me as being highly suspicious that they'd reveal one but not the other.
To spell that out, if "the Android SLocker ransomware family accounts for almost half of all mobile malware reported by infected devices in H1 2016 in Denmark", for example, and the total number of infected devices is ... two, that would mean that the sensationalist headline of "half of all mobile malware" actually only amounts to just one solitary infection.
Of course, I don't seriously believe it is just one infection, but without hard numbers I have no way to be sure, so this is just to illustrate how statistics can be used to manipulate the truth.
In any event, as the article concedes, you have to jump through quite a few hoops to get malware onto Android, which is a very different proposition indeed compared to being infected by just viewing a webpage in Windows. Apart from anything else, the former is social engineering, which no software can mitigate, and is therefore not a failing of software security, whereas the latter quite obviously is.