Users of a video sharing website with more than 30 million members reported pop-up messages asking them to update Adobes Flash Player to the latest version.The video sharing service is provided by Nico Nico in Japan and the prompt was caused by a malicious script injected into the code of advertisements distributed through MicroAd and displayed during the video play.The pop-up directed the users to Flash Player download site mimicking the original Adobe page that delivered malicious con…
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