Day of the digital undead

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Like the living dead, armies of “zombie” computers are disrupting corporate networks and sucking the life out of business-critical systems around the world. Zombies strike fear into the hearts of IT personnel responsible for maintenance of corporate networks, and particularly those charged with protecting and ensuring the availability of vital corporate email systems.

A zombie is a computer that has been compromised by attackers, typically for the purpose of sending spam email and viruses to literally millions of recipients. Zombies are created by the use of trojans, malicious programs disguised as legitimate email attachments or file downloads. Once ...

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