International Click-Fraud Bot Strikes Close to a Million Victims Worldwide

From ZDNet

A botnet which has infected systems around the world counts almost one million victim PCs within its network, researchers say.

Botnets are networks of PCs which have been infected with malicious software designed to take control of the system without the owner's knowledge. This can lead to 'slave' PCs being forced to send spam or launch distributed denial-of-service (DDoS) attacks against web domains, but controllers may also redirect slave PC users to malicious domains.

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