Ah, the holidays are upon us. And, as we all know, 'tis the season for piles of spam!
Or is it? Last year, we saw a very large run up of spam heading into December, but in the month of December itself I saw nothing out of the ordinary. Here is the breakdown for the week starting the below mentioned day and the week-over-week % increase:
02-Oct-2006 14.63% 09-Oct-2006 13.22% 16-Oct-2006 7.97% 23-Oct-2006 5.44% 30-Oct-2006 9.08% 06-Nov-2006 -0.22% 13-Nov-2006 2.21% 20-Nov-2006 -0.60% 27-Nov-2006 4.24% 04-Dec-2006 0.40% 11-Dec-2006 8.80% 18-Dec-2006 1.27% 25-Dec-2006 -22.18%
Note that while the total traffic went up in December (other than Christmas, where everyone clearly took the week off, including spammers), traffic was going up for each week before that. In other words, December was spammy, but so was October. Furthermore, the weeks in January and February (excluding the first week of the year), total email traffic was about the same as it was in November and December.
However, the two week period of Dec 11 - Dec 25 did contain the highest traffic totals, so perhaps there is some truth to the theory that there is a spam blitz in that period. Let's use the week of Nov 6-12, 2006 as a baseline:
06-Nov-06 1.000 13-Nov-06 1.022 20-Nov-06 1.016 27-Nov-06 1.059 04-Dec-06 1.063 11-Dec-06 1.157 18-Dec-06 1.172 25-Dec-06 0.912 01-Jan-07 0.890 08-Jan-07 1.048 15-Jan-07 1.114 22-Jan-07 1.054 29-Jan-07 1.161 05-Feb-07 1.044 12-Feb-07 1.046 19-Feb-07 1.112 26-Feb-07 1.038
If the December/spam theory were valid, we would expect to see a large spike in December and then see the numbers subside afterwards. In fact, we don't see that except in December 11-25. Afterwards, the numbers are wildly erratic, but Jan 26-Feb 1 is nearly as high as the supposedly high spam period. There's nothing particularly holiday-like about that period of time.
Thus, while I'm not about to call this a myth yet (I still have to check 2005), I don't think there's a lot of evidence at this point to say that December is truly an extra spammy season.
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Could it just be that people feel that spam increases in December because personal/work email tends to decrease as people take their vacations?
That's possible, Matthew.
The other day, I posted that the Christmas season is upon us and that there has not been a major correlation