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Zombie plague sweeps the inaternet
the shadowserver foundation is a group of security professionals who volunteer their time to track and measure botnets to help law enforcement investigations .
the rise is believed to be linked to attacks that booby-trap websites to try to infect the machines of visitors .
in june 2008 shadowserver foundation knew about more than 100,000 machines that were part of a botnet .
the rise in numbers has been accompanied by a fall in the number of so-called command and control (c