The Bureau of Diplomatic Security (DS) is the security and law enforcement arm of the U.S. Department of State (the Department). DS is a world leader in international investigations, threat analysis, cyber security, counterterrorism, security technology, and protection of people, property, and information. Its primary mission is to provide a safe and secure environment for the conduct of U.S. foreign policy. The Office of Security Technology (ST) supports the DS mission through the application and use of appropriate technical security countermeasures. The Countermeasures Program (CMP) and Security Technology Operations (STO) divisions are operational components within ST. CMP is primarily responsible for worldwide technical countermeasures policy for the Department. Countermeasures policies enforce the protection of sensitive and classified information. CMP also manages the overseas technical surveillance countermeasures (TSCM) program.