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Image spam reached a new high of 25 per cent of total spam volume in October 2006, an increase of 421 per cent in a year, according to IronPort.
Paul Judge, chief technology officer of Secure Computing, said filters that use key text words, mathematical analysis or even optical recognition have become less effective against the newest spam.
“Spammers are using advanced mathematical and graphical techniques like random modification of image pixels and dynamic construction of images from multiple components to bypass spam filtering tools.
California security firm McAfee said some spammers now use “island-hopping,” directing messages from the domain names of small islands to disguise themselves from filters that traditionally catch more well-known domains.
Full Article :: Spam back with a vengeance
The past 2 weeks i have been getting hundreds of daily messages , from Mailer deamon , or returned mail user unavailable
