The VenomThorn class disruptor turret was a type of fixed emplacement used by the Romulan Star Empire. This class of emplacement were considered an essential element within a Romulan colony's security system; it was effective against both external and internal threats. In relation to its external application, it served as a defensive security hardpoint. Typically placed around the perimeter of a Romulan colony, they are integrated into the defensive network and guided by the Security Bureau's tactical computers whilst being powered by the main power grid. These turrets were capable of delivering an exceptional volume of firepower in defense of the colony. However, Romulan dissident factions often claimed that the turrets were also an active tool in the repression of the colonists.