The State Security Department or VSD (Lithuanian: Valstybės saugumo departamentas) is the national civilian intelligence and security agency of Republic of Lithuania which collects and analyzing information from internal and external on threats to national security and works to eliminate those threats.
The VSD also conducts analysis and development intelligence gathering and counterintelligence systems to create national security, clandestine and covert operations, counterintelligence, counter-revolutionary, counterterrorism, creation a civilian security network intelligence, cybersecurity to prevent civilian intelligence leaks when systems are hacked, cyberwarfare, executive protection (especially the President of the Republic of Lithuania and visiting foreign leaders), internal security, political warfare, support anti-corruption, and threat assessment to national security, including protects state secrets and classified information, and vets certain applicants for residence permits or entry to Republic of Lithuania.
The origins of the institution are in the Intelligence Unit established within the Lithuanian Armed Forces on 27 October 1918.[1] The first head of the intelligence service was Jonas Žilinskas. In 1923, many intelligence activities were transferred to the Ministry of the Interior and the institution changed its name over time. In 1933 it was re-organized into the State Security Department with the objective to counterintelligence and suppress espionage activities.[1] The last director of the service in the interwar period was Augustinas Povilaitis. In the aftermath of the Soviet invasion and occupation in 1940, he was arrested and executed by the Soviets.
The department was reestablished on 26 March 1990.[2] At that time, the department was also responsible for certain aspects of law enforcement: providing protection to state officials and strategic objects, ensuring integrity of state communications network, investigating political corruption. Other agencies took over these extra duties and, during 2010, the mission of VSD was clarified to mainly focus on counterintelligence, counterterrorism, intelligence gathering, internal security, and threat assessment to national security.[2]