Android passed Symbian in Q2 (of 2011) for the world’s leading mobile OS that’s hit with malware. By no means is this feat to be taken lightly for several reasons:
1) It further demonstrates how far Nokia has fallen regarding their once-dominate market stature.
2) It also (obviously) shows how far Google’s OS has grown in a relatively short period of time (since it was released).
3) Be it openness vs. a closed / walled-garden approach… neither orientation is not without challenges.
4) As the malicious activities continue to increase in frequency they are also becoming more and more insidious as many apps (that were voluntarily downloaded) were the source of malware to begin with.
5) With the Android OS becoming ever-fragmented; the risks of such (will) continue to increase.
From PC Magazine: http://goo.gl/INZL5