Apr 26, 2004 : CanIt Filters New Spam Tactic
📅 - Roaring Penguin Software (roaringpenguin.com) said on Monday that a new spamming tactic was detected and averted by a unique new feature in its flagship CanIt anti-spam solution called "hit and run detection." The company said the solution successfully prevented CanIt customers from receiving thousands of spam messages originated by zombie spam armies, groups of compromised computers used as launch pads for spam attacks.
"It appears that new spam technology is coordinating delivery attempts among many compromised mail machines in order to bypass realtime blacklists," says David Skoll, president and CEO of Ontario, Canada-based Roaring Penguin. "This kind of spamming tactic is an excellent example of how our hit-and-run detection, also known as greylisting, stops spam even before it reaches the mail server and before time is spent on content-scanning."
According to Roaring Penguin, the recent rash of spam army attacks highlights why the whitelisting and blacklisting dichotomy is an insufficient framework for fighting spam. The company said DNS-based blacklists, because they look only at the IP address of the spam-sending machine, are being circumvented by spammers who are now using zombie armies to attack from large numbers of different machines. Roaring Penguin advocates "greylisting" approach.
Roaring Penguin launched CanIt 2.0 in November of last year.
"It appears that new spam technology is coordinating delivery attempts among many compromised mail machines in order to bypass realtime blacklists," says David Skoll, president and CEO of Ontario, Canada-based Roaring Penguin. "This kind of spamming tactic is an excellent example of how our hit-and-run detection, also known as greylisting, stops spam even before it reaches the mail server and before time is spent on content-scanning."
According to Roaring Penguin, the recent rash of spam army attacks highlights why the whitelisting and blacklisting dichotomy is an insufficient framework for fighting spam. The company said DNS-based blacklists, because they look only at the IP address of the spam-sending machine, are being circumvented by spammers who are now using zombie armies to attack from large numbers of different machines. Roaring Penguin advocates "greylisting" approach.
Roaring Penguin launched CanIt 2.0 in November of last year.
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