Immigration and Customs Enforcement (ICE) has for two years involved in stuffing child pornography images and moving-images inside of average files shared by servers sanctioned by the FBI. The methods of stuffing varies from each agent or officer but are approved as long as the suspect cannot detect that the file contains child pornography until the file has been downloaded. Child pornography has successfully been stuffed into adult pornography films, music files using ID3 tags, software programs, keygens and cracks, and other material that has been illicitly traded over P2P file sharing networks. This method has been successful to plant evidence leading to prosecution of individual who may or may not have anything to do with child pornographers and copyright infringement. The method has been approved for official procedures under the guise that it must be kept as classified information. This is very handy for abusive governments who want to entrap people for any reason.

http://www.scribd.com/doc/165484971/Operation-Flicker-ICE-Spacial-T...

Child pornography is detestable but so is also its use to entrap innocent people for any reason the government sees fit.
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