The Unwelcome Return of Image Spam

Image spam has been around for many years, having spurts of popularity when spam filters get good at detecting normal types of spam. Each resurgence has seen image spam increase in sophistication. To try and understand image spam, I started talking to the people at Red Condor, a well-known spam filtering service.

Brien Voorhees, one of the founders of Red Condor was kind enough to answer my numerous questions. Let's see what he has to say about image spam:

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