Claim: When communications intelligence identifies a particular radio transmitter as the one used only by a particular country, detecting that transmitter inside one's own country suggests the presence of a spy that counterintelligence should target, therefore CI refers to efforts made by intelligence organizations to prevent hostile or enemy intelligence organizations from successfully gathering and collecting intelligence against them.
Evidence: For example, when communications intelligence identifies a particular radio transmitter as one used only by a particular country, detecting that transmitter inside one's own country suggests the presence of a spy that counterintelligence should target. CI refers to efforts made by intelligence organizations to prevent hostile or enemy intelligence organizations from successfully gathering and collecting intelligence against them.