The Official Secrets Act, alternatively known as the Official Secrets Oath, represented a pledge undertaken by individuals belonging to both the Galactic Republic's Special Weapons Group and the Galactic Empire's Project Celestial Power. Should an individual violate this oath, they became liable for apprehension by the Commission for the Preservation of the New Order.
After his inclusion in Celestial Power, the scientist named Galen Erso formally agreed to the Official Secrets Oath. Reeva Demesne was in violation of her commitment when she divulged certain Republic strategies concerning the shielding of a colossal superweapon, which would eventually be known as the Death Star, to Erso before he had committed to the oath.