Starfleet Security is the branch of the Federation Starfleet responsible for security aboard all Federation starships and at all Federation starbases and outposts. In addition, Starfleet Security is responsible for providing security at all Federation government facilities, such as the Palais de la Concorde. Starfleet Security is responsible for maintaining and enforcing Starfleet regulations, procedures and policies on all Starfleet and affiliated facilities, outposts, and vessels, and is responsible for setting security clearances for all Starfleet and government personnel and facilities. Starfleet Security often works in conjunction with Starfleet Intelligence. (TNG episode: "The Drumhead", et. al.)
History
22nd century
Starfleet Security can trace its origins in large part back to United Earth's Military Assault Command Organization. Following the Earth-Romulan War the MACOs were folded into the Federation Starfleet, becoming known as Starfleet Security. Prior to that, United Earth Starfleet Security conducted the investigation into Dr. Phlox's kidnapping by the Klingons. (ENT - Rise of the Federation novel: A Choice of Futures,ENT episode: "Affliction")
A special division of Starfleet Security provides constant security for the President of the United Federation of Planets. Members of the presidential protection division are present with the President at all times, and constantly guard the Château Thelian and the Presidential Office. Typically, Security officers wear standard Starfleet duty uniforms; on special occasions, officers may wear formal wear from their home planets or a Starfleet dress uniform. (ST novel: Articles of the Federation)
24th century
In 2367, Vice-Admiral Thomas Henry was Chief of Starfleet Security. (TNG episode: "The Drumhead")
In 2379, Starfleet Admirals William Ross, Alynna Nechayev, and Mamoru Nakamura used their authority within Starfleet Command to order all members of Starfleet Security out of the Palais and away from Federation President Min Zife, whom they forced to resign at gunpoint. Subsequently, agents of Section 31 assassinated Zife, his chief of staff, Koll Azernal, and Federation Secretary of Military Intelligence Nelino Quafina. (TNG - A Time to... novel: A Time to Heal)
An entry comparing the life-span of various beings with the shelf life of gold-pressed latinum includes the entry "Lifespan of a Federation hew-mon working for Starfleet Security: Rarely survive beyond the second act break". (DS9 novel: Legends of the Ferengi)
Connections
External Link
Starfleet Security article at Memory Alpha, the wiki for canon Star Trek.