Although the second quarter of 2016 has only just finished, it’s safe to say that this is already the year of ransomware Trojans. By the end of Q2 there was still a large number of emails with malicious attachments, most of which download ransomware in one way or other to a victim’s computer. However, in the period between 1 June and 21 June the proportion of these emails decreased dramatically.
The majority of malicious attachments were distributed in ZIP archives. The decline can therefore be clearly seen in the following graph showing spam with ZIP attachments that arrived in our traps:
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