Android users are increasing day by day. All the major mobile companies like Samsung, HTC, Google nexus, Micromax and lots of other devices are based Android OS. As recently Nokia also releases first series on Android Phone.
All this popularity of android devices is just because of android Market which have millions of useful apps. But on the other hand many Android apps contain unwanted viruses and other malware which may effect your device and data as well. So it better to take precaution...