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As an update to my May post on Andreas Marx’s chart on the growth of malware, here are the latest stats from

Unique samples added by month:


Total number of unique samples in the AV-Test zoo:


According to Marx, “if you look at the graphics, you can see that anti-virus companies have to deal with more than one million unique new malware samples per month. In total, we have over 22 million unique malicious programs in our collection.”

That’s a lot of malware…

(Original Excel spreadsheet here.)

Alex Eckelberry