The spread of infected online ads has spiked tenfold over the past year, according to research disclosed by security intelligence firm RiskIQ at a recent Online Trust Alliance conference in
Washington, D.C.
RiskIQ documented a peak of 14,694 occurrences of malvertisements in May of this year, up from 1,533 in May 2010. Each corrupted ad could have infected the PCs of thousands or
millions of website visitors, based on how long the ad ran, says Elias Manousos, CEO of RiskIQ.
"In 2011 we observed malvertisements on major sites such as weather.com, foxsports.com,
monster.com and usnews.com, just to name a few," Manousos says.
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