As the report notes, Android's leading position as the main malware target is due to its position as the leading mobile platform. Other reports have also cited Android's status as an open-source platform, which can be modified by any carrier or manufacturer in ways that could be less than secure, as well as a lack of stringent monitoring in the app marketplace in Google Play, the online store.
Symbian devices account for only 4 percent of malware, and all other platforms -- iOS, BlackBerry, Windows Mobile and J2ME -- are hovering around zero for the quarter.
One of the most dramatic changes in the report is the huge increase in Android's share of the malware market in the fourth quarter of last year, compared with the previous three. In the first through third quarters, Android's share was in the 46 percent to 49 percent range, while Symbian's veered between 14 percent and 21 percent, and the others barely registered in the 0 percent to 2 percent range.
But in the fourth quarter, Symbian plummeted to 4 percent, largely because of the platform's rapid decline as Nokia transitions to Windows Phone. This is a key reason for Android's jump to 96 percent.
Sean Sullivan, security adviser at F-Secure Labs, said in a statement that, "as old Symbian handsets continue to be replaced by those with other operating systems, especially Android, Symbian malware dies off."
Sullivan suggested that Symbian malware could become extinct this year.
Overall for 2012, malware targeting Symbian dropped to 19 percent, compared with 2011's 29...