On Thu, Feb 17, 2005 at 10:26:55AM -0500, Parag Warudkar wrote:The spamers become always cleverer :-) .
On Thursday 17 February 2005 10:10 am, Paolo Ornati wrote:
SPAM. This looks to me like a new way of spamming though, replying to valid mailing list messages. (I too received couple of these in reply to my messages.)ÄúºÃ£ºand... what does this means?
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The most interesting fact seems to be that these spam messages have the same message ID as the original Mails.
If you run a program that automatically discards duplicate mails and the spam message reaches you faster than the original email through linux-kernel (which seems to often happen with these mails), the original email will be discarded.
I don't know whether these are known attacks, but the automatic discarding of duplicated emails offers attackers nice opportunities if they know a message ID (as with these emails) or can guess the
message ID (since many MUAs have predictable message IDs, an attacker C
could use this to suppress a message from person A to person B by sending an email with the message ID to person B bevor person B gets the email from person A).
Parag
cu
Adrian