The Vulcan Security Directorate or Ministry of Security was an agency within the Vulcan High Command during the 22nd century. During the early 22nd century, T'Pol operated as an agent with the Ministry of Security and gained associates within the Klingon Empire (ENT: "Judgment") One of her first assignments for the Ministry was to retrieve seven rogue agents. She tracked the last two of them, Jossen and Menos, down to Risa in 2135. (ENT: "The Seventh")