Number of unique malware variants added per year 2014-2017

The data displays the number of unique malware programs that were detected for the first time from 2014 to 2017. In the most recently reported period, almost 670 million new variants of malware were observed, up from 357 million malware variants in 2017. The growth in malware variants was largely owing to the Kotver Trojan (Trojan.Kotver), which accounted for 78% of the new variants in 2017.