$0.02: There *are* exploits that utilizes JPEG as the delivery method for
virii on Windows boxes. Plus, 99.9% certain there are known and recent
buffer overruns with libraries for PNG, BMP and JPEG on *nix.
See: http://www.enterpriseitplanet.com/security/news/article.php/3418321
Regards,
KAM
Rolf wrote:
what is the security risk with message/partial?
Sending 7 emails each with a picture attachment doesn't seem to me to be
an issue per se, so I presume that their mail client might have split it
up. Any clients known to do this? Workarounds?
If the email is JPEG image, as in your case, there's no harm. However, if
the email contains virus, and it is sent as message/partial, it can't be
detected by virus scanners. Theoreticall, each mail could contain only
one byte of the actuall virus code. There's no way for virus scanners to
scan such an email. Most commercial anti-virus tools will block
message/partial by default also. None that I know of will attempt to
reassemble the email.
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