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Cyren Security Blog

The Cyren Security Blog is where Cyren engineers and thought leaders provide insights, research and analysis on a range of current cybersecurity topics.

Spam declines 30% in Q4 2010

In October we reported an 18% drop in global spam levels (comparing September and October). This was largely attributed to the closure of Spamit around the end of September. Spamit is the organization allegedly behind a fair percentage of the worlds pharmacy spam. According to reports in October, the reasons for the sudden “voluntary” closure were related to charges brought against the individuals behind Spamit.

Analysis of the spam trends to date reveals a further drop in the amounts of spam sent during Q4 2010. December’s daily average was around 30% less than September’s. The average spam level for the quarter was 83% down from 88% in Q3 2010. The beginning of December saw a low of nearly 74%.

The nature of the spam attacks has also clearly changed. The pre-October graph shows large fluctuations in the amounts of spam sent. In Q4 2010 there were generally lower fluctuations – aside from two large outbreaks in mid-October and mid-December. The large amounts of pre-Christmas spam are something of a tradition, but here too the outbreak was smaller than most of the large outbreaks this year.

As before, we remain cautious about the long-term implications. Spam levels have decreased in the past only to return to even higher levels within short periods. Don’t pack away your Anti-Spam just yet.

We have also included a more detailed view of the Ham graph. As always, weekends are clearly visible as is the Christmas decline. Ever wondered about worker productivity? Tuesday seems to be the day we get the most work done (or at least send the most emails). Although Saturday seems quieter than Sunday we should point out that our GlobalView Network analysis is based on collection of worldwide traffic. The info is dated according to US West Coast time and Sunday data will therefore include some early Monday stats based on observed Asian traffic.

Full coverage of the results will be provided in Commtouch’s Internet Threats Trend Report for Q4 2010 due to be published at the start of January.

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