High Quality Content by WIKIPEDIA articles! The Office of Special Affairs or OSA (formerly the Guardian`s Office) is a department of the Church of Scientology. According to the Church, the OSA is responsible for directing legal affairs, public relations, pursuing investigations, publicizing the Church`s "social betterment works," and "oversee social reform programs". Some observers outside the Church have characterized the department as an intelligence agency, comparing it variously to the CIA, the Secret Service, and the KGB. The department has drawn criticism for its involvement in targeting critics of the Church for dead agent operations. OSA has mounted character assassination operations against many critics of the Church.