 Administered by the loose partnership of Microsoft and law enforcement agencies, CETS offers tools to gather and share evidence and information so they can identify, prevent and punish those who commit crimes against children.In 2003, Detective Sergeant Paul Gillespie, Officer in Charge of the Child Exploitation Section of the Toronto Police Service's Sex Crimes Unit, made a request directly to Bill Gates, CEO and Chief Architect at Microsoft at the time, for assistance with these types of crimes.Agencies experienced in tracking and apprehending those who perpetrate such crimes were involved in the design, implementation, and policy.