Hackers' new target: Social networking sites

Social networking sites will be the biggest new source of vulnerabilities that cybercriminals and hackers will seek to exploit in 2010, according to a new report from Cisco. The company found that social networking sites now account for nearly 2 percent of Web traffic that originates from federal agencies and private-sector companies. Facebook leads the pack, accounting for more than half the traffic; MySpace, LinkedIn and Twitter also draw significant clicks.

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