By infiltrating a criminal computer network aimed at infecting visitors to legitimate websites, university researchers have gained firsthand insight into the scale and scope of so-called "drive-by downloading." They found more than 6,500 websites hosting malicious code that redirected nearly 340,000 visitors to malicious sites. Drive-by downloading involves hacking into a legitimate site to covertly install malicious software on visitors' machines or redirect them to another site. (source: technologyreview.com)
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