Two and a half million Internet of Things (IoT) devices were infected by Mirai botnet by the end of fourth quarter last year, a new report by cyber security company McAfee said on Tuesday.
Mirai is a malware that turns networked devices running on obsolete versions of Linux into remotely controlled "bots" which can be used for large-scale network attacks.
The 'McAfee Labs Threats Report April 2017' estimated that five IoT device IP addresses were infected by Mirai botnet each minute.
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Overall count of new malware samples grew 24 percent in 2016 to 638 million samples despite showing a drop of 17 percent in the fourth quarter.
McAfee also detected 176 new cyber-threats every minute, almost three every second in the fourth quarter of 2016. Further, the total mobile malware grew 99 percent in 2016.
"The number of total ransomware samples grew 88 percent in 2016, despite 71 percent drop in fourth quarter," the company said.
The findings further showed that the number of new Mac OS malware samples grew 245 percent in the fourth quarter due to adware bundling, though still small compared to Windows threats. Also, overall Mac OS malware grew 744 percent in 2016.Also read: ICC Announces Intel as 'Innovative Partner' For Champions Trophy
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