Final answer:
Reporting unauthorized disclosure of classified information or CUI is the responsibility of supervisors, employees, and contractors.
Step-by-step explanation:
Reporting unauthorized disclosure (UD) of classified information or controlled unclassified information (CUI) is the responsibility of all of the above: Supervisors, Employees, and Contractors. According to 50 U.S.C. § 3033(k)(5)(A), an employee of an element of the intelligence community, an employee assigned or detailed to an element of the intelligence community, or an employee of a contractor to the intelligence community who intends to report a complaint or information with respect to an urgent concern may report it to the ICIG. This means that any personnel in the intelligence community, including supervisors, employees, and contractors, are responsible for reporting unauthorized disclosures.