In January 2005, Yahoo discovered unlawful images on their computer servers and reported the images to
the National Center for Missing and Exploited Children.
The information was directed to the Arizona ICAC Task Force leading to a search warrant and the arrest of 44 year old Donald Lee Cook, an unmarried security guard. Cook, who used the screen name Ilove_littlekittys, made admissions to the images and also named a child seen in the images as a family friend. Further investigation revealed that Cook had repeatedly molested the child and that he had recorded the unlawful acts.
After four years of legal maneuvering, in October 2009 Cook was found guilty in Maricopa County Superior Court and sentenced to 136 years in prison.
The principals in the successful investigation and prosecution included Yahoo, NCMEC, AZ ICAC Task Force, Phoenix PD, Mesa PD, and the Maricopa County Attorney's Office.
See also: http://www.azicac.org/content.php?info_id=28&PHPSESSID=8dff902026d53ba267897089f1ffab79
