, SecurityFocus 2007-07-18
Foiled by increasingly accurate corporate spam filters, spammers have dumped pictures for PDFs in their bulk e-mailings, according to the latest data from security firms.
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Spammers dump images, switch to PDF files
2007-07-21
Anonymous (1 replies)
Anonymous (1 replies)
In recent history we've had:
character insertion based text obfuscation
HTML tiny-or-invisble color character insertion
HTML table-based text scrambling
image-based
tiled multi-image based
pdf based..
So what's next.. Adoption of fast-flux web-linking from viruses by spammers? AVI spam? mp3 spam? With all the CPU resources of bot-nets to generate them, the possibilities are nearly boundless.
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