Nokia malware report shows that smartphones pulled ahead of Windows-based computers and laptops, account for 60% of the malware activity observed in the mobile network. The Nokia Threat Intelligence Report also reveals an increase in iOS-based malware, growing sophistication of Android malware and the rising threat of mobile ransomware.
However, due to a decrease in adware activity, the overall infection rate in mobile networks declined from 0.75% to 0.49% on Windows-based PCs connected to the Internet via a mobile network in the second half of 2015. Adware is a software that automatically displays or downloads advertising material (often unwanted) when a user is online.
In the same time period, smartphone infection rates increased and now account for 60% of infections detected in the mobile networks. Android continues to be the main mobile platform targeted, said Nokia.
The report notes that ransomware malwares that effectively holds a device hostage by encrypting data and then locking it such as CryptoLocker has been around for a while on Windows PCs, but 2015 saw several varieties attacking Android as well.