Originally published here: https://www.clearancejobsblog.com/information-and-faqs-for-the-state-departments-bureau-of-diplomatic-security/
The Department of State (DoS) Bureau of Diplomatic Security (DSS) is the division that processes and conducts all background investigations for DoS employees and contractors working for DoS. They are one of the few agencies that handle their own investigations in lieu of using the Defense Counterintelligence and Security Agency. Investigation levels are based on position designation and range from moderate risk public trust (no clearance) to Special Sensitive (Top Secret with SCI access). Read more by clicking on the link above.