However, Postini did see a rise in viruses and directory harvest attacks (DHAs), an attempt by spammers to hijack and steal an enterprise's entire email directory and use it to send out junk email attacking corporate email servers.
Testifying before a Senate committee hearing on the effect of the CAN SPAM act in late May, Shinya Akamine, president and CEO of Postini said there has been no reduction in the amount of spam since the act was passed and that spammers are modifying their messages to defeat traditional anti-spam technologies.
In May Postini processed over 5.7 billion messages, of which, 107,901,554 contained viruses
Postini's top-ten viruses of May were: netsky, objectdata, sober, mime, bagle, lovgate, klez, dumaru, mydoom, and mhtredir.
This article was compiled and edited by CIO Update staff. Please direct any questions regarding its content to Allen Bernard, Managing Editor.