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NEWS FROM THE LAB - Tuesday, June 6, 2006
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Are you getting weird spam with numbers? Posted by Mikko @ 09:37 GMT

We've received some questions on weird spam messages going around that look like this:

5556

There seems to be lots of them going around, looking at some of the discussion on the topic.

The mails do not contain an attachment. There aren't any scripts in them either. The numbers keep changing though? So what are they? We're not sure, but it might be that some botnet herder is checking the quality of his email lists: finding out which messages bounce and which don't.