Malvertising
Malvertising (malicious advertising) is a reasonably fresh take on an online criminal methodology that appears focused on the installation of unwanted or outright malicious software through the use of internet advertising media networks, exchanges and other user supplied content publishing services common to the Social Networking space. The most popular Malvertising vector active "in the wild" is a result of the client rendering of Adobe Flash SWF files that contain maliciously coded Flash ActionScript.
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