The V'Shar (also known as the Vulcan Ministry of Security or the Vulcan Security Directorate) was the Vulcan intelligence and security agency responsible for maintaining internal affairs on Vulcan and external affairs in Vulcan space. After the founding of the Federation, the V'Shar became responsible for internal affairs on Vulcan and external affairs outside the normal operations of Starfleet Intelligence.
In 2154 the security ministry investigated T'Les under suspicion of stealing classified documents from the Vulcan Science Academy, where she worked as an instructor. She decided to resign, instead of being fired. (ENT: "Home")