IT Industry Today writes:
... detection more difficult. As both MessageLabs and the wider anti-spam community have improved their image processing techniques, spammers are increasingly switching to a new format: PDF PDF (Portable Document Format) ...
Further reading
... detection more difficult. As both MessageLabs and the wider anti-spam community have improved their image processing techniques, spammers are increasingly switching to a new format: PDF PDF (Portable Document Format) ...
Further reading
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