Image-based spam is old news and net users know it only too well. Then again, spammers are very skilled at adding a bit of salt and pepper to the old recipe, just to make sure their message will go through the spam filters this time. So there it is: the spam with a touch of 3D.
As it follows, spammers have been playing around with images by changing fonts, adding colors, and inserting random dots and lines, just so that every pseudo 3D image would look at least a bit different from the million others sent to world wide users.
"Generating images like this is, of course, more computing intensive but spammers have lots of computing power at their disposal via the huge botnets they are running. It's not like they couldn't afford to render unique 3D spam for every recipient," F-Secure wrote on its blog.
The new method aims to get such spam emails through spam filters and seems to be at least a little bit effective nowadays. However, updates are bound to come and render it useless, as the war between security researchers and spammers knows no truce nor end.
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random dots and lines, just so that every pseudo 3D image would look at least a bit different from the million others sent to world wide users. 
