The number of unique malware samples broke the 75 million mark in 2011, McAfee notes in its fourth-quarter threats report for 2011, which also looks back at annual global trends in malicious code activity.
According to the McAfee report, total mobile malware samples identified spiked upward to more than 400 in the fourth quarter of last year, a sharp rise from each of the year's three previous quarters that had seen only about 100 or fewer. "It's primarily Android," says McAfee researcher Adam Wosotowsky, adding that the samples are being discovered mostly outside the official Android store, not in it.
