From UFStarfleet Wiki
The Intelligence department is responsible for gathering and providing intelligence as it becomes possible during a mission; during covert missions, the intelligence department also takes a more active role, providing the necessary classified and other information.
Chief Intelligence Officer
Responsible for managing the intelligence department in its various facets, the Chief Intelligence officer often assists the Executive Officer with information gathering and analysis, and then acts as a channel of information to the CO and bridge crew during combat situations.
An intelligence officer who specializes in cryptography and algorithmic means of intelligence such as password cracking, keyword flagging, and more.
Trained in the arts of covert operations and infiltration, these specialists are trained in the art of getting into enemy installations or territory, and then either gathering information, planting an explosive, or even carrying out an assassination if necessary, and then getting out again without getting caught.
Responsible for gathering intelligence, an Intelligence officer has the patience to read through a database for hours on end, and the cunning to coax information from an unwilling giver. S/he must provide this information to the Chief Intelligence officer as it becomes needed.