In police terms, CI stands for Confidential Informant. A confidential informant is a secret source who, through a contact officer, supplies information on criminal activity to the police or law enforcement agent. The police often use confidential informants to identify and obtain evidence against persons involved in criminal activity. Confidential informants are individuals who provide useful and credible information to a Justice Law Enforcement Agency (JLEA) regarding felonious criminal activities and from whom the JLEA expects or intends to obtain additional useful and credible information regarding such activities in the future. The FBIs Manual of Investigative Operations and Guidelines (MIOG) classifies CIs in each of the following categories: Organized Crime, General Criminal, Domestic Terrorism, White Collar Crime, Confidential Source, Drugs, International Terrorism, Civil Rights, National Infrastructure Protection/Computer Intrusion Program, Cyber Crime, and Major Theft and Violent Gangs.