Recently some of my colleagues received spam mails which were created through a single image. Or, so it seemed …
At a closer look, the image was actually created from multiple images.
See the link below:
http://www.mustaca.de/security/multiimage.eml
This should be an anti OCR technique ?!
Maybe …
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I am glad to say that John Graham Cumming has presented such a spam at the EU Spam Symposium in Maastricht.