## Sunday, December 03, 2006

### Two weeks of image spam innovation

Since I last blogged about image spam I've received numerous image spams myself, and reports from Nick FitzGerald, Sorin Mustaca and Nicholas Johnston about interesting image spams that I've just got to see.

On November 14, I received a report of image spams where the background noise had been updated from dots or small lines to polygons. Here's a sample:

A day later it was clear that the same spammer was randomizing the image size, the background noise and the color palette used:

Then on November 17 I was shown this interesting pump'n'dump technique:

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Nice, but that didn't last very long, but on November 22 the innovaters were at it again with smaller images containing polygons, lines, random colors, jagged text:

A day later the noise element changed to pixels:

Two days later spammers were trying a little 'old school' image spam with some fonts that they hoped would be hard to OCR.

Strangely the following image spam appeared on November 27 with a perfectly filterable URL. Oops:

And right before the month ended the noise around the border had turned into something like little fireworks:

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