In a latest report from Alcatel-Lucent's Motive Security Lab, Windows platform was found as the biggest carrier of mobile infections delivered via mobile networks. Windows had contributed about 80% of total infections!
This is quite startling for many Windows users. The report further stated that almost all mobile users connect their gadgets to PCs for various purposes and most of the PCs run on Windows. This is how malware is spreading like anything through Windows.
Other OS like Android, iOs and Blackberry phones are fairly secure.