![]() We rarely see attacks on a large scale like this, so we highly recommend that people keep their systems up-to date, with current antivirus and anti-malware protection. The problem comes from the ad network agency itself. What is important to remember is that legitimate websites entangled in this malvertising chain are not infected. These are the URLs we caught (posted on PasteBin). Looking at our logs we first detected this new attack pattern on August 30th, at 2 AM. The malware payload distributed onto unsuspecting visitors was identified as Zemot by Microsoft in their MSRT for September (click to enlarge): The latest victim of this campaign is last.fm, the popular music streaming site: The reason this is really big is because it involves (a subsidiary of Google for online ads) and Zedo (a popular advertising agency). It appears that this is a much larger and ongoing campaign that is affecting a number of other popular websites. Earlier today, we warned people that both The Times of Israel and The Jerusalem Post were affected by a malvertising attack.
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