Tech News on ZDNet: "Hackers are trying harder to make their networks of hijacked computers go unnoticed.
Cybercrooks are moving to new Web-based techniques to control the machines they have commandeered, popularly referred to as 'zombies.' Before, they used to send orders via Internet chat services, but with that method, they ran the risk of inadvertently revealing the location of the zombies and themselves. "
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