One Million Web Sites Infected At End of 2010

There was a sharp jump in the prevalence of malicious Web advertisements in the final quarter of 2010, with loosely monitored “remnant” ad networks responsible for an increasing share of the attacks, according to a report from the firm Dasient.

Major Ad Networks Found Serving Malicious Ads

Two major online ad networks–DoubleClick and MSN–were serving malware via drive-by download exploits over the last week, experts say, after a group of attackers was able to trick the networks into displaying their ads by impersonating an online advertising provider.

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