The Diplomatic Security Service (DSS) is the principal
law enforcement
Law enforcement is the activity of some members of the government or other social institutions who act in an organized manner to enforce the law by investigating, deterring, rehabilitating, or punishing people who violate the rules and norms gove ...
and security agency of the
United States Department of State
The United States Department of State (DOS), or simply the State Department, is an United States federal executive departments, executive department of the U.S. federal government responsible for the country's foreign policy of the United State ...
(DOS). Its primary mission is to protect diplomatic assets, personnel, and information, and combat transnational crimes connected to
visa and
passport fraud. DSS also conducts
counterterrorism
Counterterrorism (alternatively spelled: counter-terrorism), also known as anti-terrorism, relates to the practices, military tactics, techniques, and strategies that governments, law enforcement, businesses, and Intelligence agency, intelligence ...
,
counterintelligence
Counterintelligence (counter-intelligence) or counterespionage (counter-espionage) is any activity aimed at protecting an agency's Intelligence agency, intelligence program from an opposition's intelligence service. It includes gathering informati ...
,
cybersecurity
Computer security (also cybersecurity, digital security, or information technology (IT) security) is a subdiscipline within the field of information security. It consists of the protection of computer software, systems and networks from thr ...
and
criminal investigation
Criminal investigation is an applied science that involves the study of facts that are then used to inform criminal trials. A complete criminal investigation can include Search and seizure, searching, interviews, interrogations, Evidence (law), ...
s domestically and abroad.
Originating in diplomatic security measures implemented during the
First World War
World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
, DSS was
formally established in 1985 following the deadly 1983 bombings of the
U.S. embassy and
Marine barracks in
Beirut
Beirut ( ; ) is the Capital city, capital and largest city of Lebanon. , Greater Beirut has a population of 2.5 million, just under half of Lebanon's population, which makes it the List of largest cities in the Levant region by populatio ...
, Lebanon.
It is the leading U.S. law enforcement agency abroad and the most widely deployed in the world, protecting 275 U.S.
diplomatic missions in over 170 countries and in more than thirty U.S. cities. As employees of the U.S. State Department, DSS
special agent
In the United States, a special agent is an official title used to refer to certain investigators or detectives of federal, military, tribal, or state agencies who primarily serve in criminal investigatory positions. Additionally, some special ...
s are unique in
U.S. federal law enforcement for also being members of the
Foreign Service.
The service's most visible activity is providing security to the
U.S. secretary of state, the
U.S. ambassador to the United Nations and other senior diplomats. As part of its duty to provide a safe and secure environment for U.S. diplomacy, DSS also protects foreign dignitaries visiting the United States, advises U.S. ambassadors on security matters, and manages security programs for international events, often in cooperation with domestic and foreign counterparts.
Overview
While best known for its security role, DSS is a full-fledged
law enforcement agency
A law enforcement agency (LEA) is any government agency responsible for law enforcement within a specific jurisdiction through the employment and deployment of law enforcement officers and their resources. The most common type of law enforcement ...
that conducts international
criminal investigation
Criminal investigation is an applied science that involves the study of facts that are then used to inform criminal trials. A complete criminal investigation can include Search and seizure, searching, interviews, interrogations, Evidence (law), ...
s,
threat analysis,
counterterrorism
Counterterrorism (alternatively spelled: counter-terrorism), also known as anti-terrorism, relates to the practices, military tactics, techniques, and strategies that governments, law enforcement, businesses, and Intelligence agency, intelligence ...
,
counterintelligence
Counterintelligence (counter-intelligence) or counterespionage (counter-espionage) is any activity aimed at protecting an agency's Intelligence agency, intelligence program from an opposition's intelligence service. It includes gathering informati ...
, security technology,
cybersecurity
Computer security (also cybersecurity, digital security, or information technology (IT) security) is a subdiscipline within the field of information security. It consists of the protection of computer software, systems and networks from thr ...
, and investigations into international
human trafficking
Human trafficking is the act of recruiting, transporting, transferring, harboring, or receiving individuals through force, fraud, or coercion for the purpose of exploitation. This exploitation may include forced labor, sexual slavery, or oth ...
.
The agency employs over 2,500 Foreign Service specialists, including special agents, security engineering officers, security technical specialists, and diplomatic couriers.
DSS agents are federal agents with the power to arrest, carry
firearm
A firearm is any type of gun that uses an explosive charge and is designed to be readily carried and operated by an individual. The term is legally defined further in different countries (see legal definitions).
The first firearms originate ...
s, serve
arrest warrant
An arrest warrant is a warrant issued by a judge or magistrate on behalf of the state which authorizes the arrest and detention of an individual or the search and seizure of an individual's property.
Canada
Arrest warrants are issued by a jud ...
s and perform other law enforcement activities.
Whereas most U.S. federal law enforcement agents are members of the
federal civil service, the majority of DSS special agents are both
Foreign Service specialists and law enforcement officers. DSS agents are unique in being required to serve multiple-year tours abroad as a condition of employment.
When not on an overseas assignment, agents serve at DSS headquarters in
Arlington, Virginia
Arlington County, or simply Arlington, is a County (United States), county in the U.S. state of Virginia. The county is located in Northern Virginia on the southwestern bank of the Potomac River directly across from Washington, D.C., the nati ...
, or in one of the thirty-three field offices nationwide.
A small percentage of DSS special agents are members of the
State Department
The United States Department of State (DOS), or simply the State Department, is an executive department of the U.S. federal government responsible for the country's foreign policy and relations. Equivalent to the ministry of foreign affairs o ...
's civil service and are not mandated to serve tours overseas; they instead focus on criminal investigations and dignitary protection within the United States.
When assigned to domestic field offices, DSS special agents investigate transnational crimes,
passport fraud and
visa fraud, and protect visiting foreign dignitaries. They also investigate the activities of foreign intelligence agencies that are focused on the Department of State, assist in apprehending fugitives that have fled the United States, and conduct background checks on State Department employees, applicants, and contractors.
DSS special agents perform law enforcement duties at U.S. missions, provide security assistance, protect senior diplomats, and perform other roles as needed. The ranking DSS special agent at an
embassy
A diplomatic mission or foreign mission is a group of people from a Sovereign state, state or organization present in another state to represent the sending state or organization officially in the receiving or host state. In practice, the phrase ...
or
consulate
A consulate is the office of a consul. A type of mission, it is usually subordinate to the state's main representation in the capital of that foreign country (host state), usually an embassy (or, only between two Commonwealth countries, a ...
holds the title of
regional security officer (RSO) and is often known as the "security attaché."
History
The origins of DSS go back to the early stages of the First World War, when the United States, which sought to maintain its neutrality, found itself the target of espionage, sabotage and passport fraud.
German and Austrian spies were known to be conducting operations in
New York City
New York, often called New York City (NYC), is the most populous city in the United States, located at the southern tip of New York State on one of the world's largest natural harbors. The city comprises five boroughs, each coextensive w ...
using forged or stolen identity papers. In late 1915,
Secretary of State Robert Lansing recommended creating an international law enforcement task force within the Department of State to investigate such crimes.
Bureau of Secret Intelligence

When his suggestion failed to gain support, on April 4, 1916, Secretary Lansing, with the authorization of President Woodrow Wilson, created his own task force, the
Bureau of Secret Intelligence, which he dubbed "the Secret Service of the Department of State."
An off-the-books adjunct to the Division of Information, the Bureau was also known as the Office of the Chief Special Agent, possibly to disguise its sensitive operations.
Supported by confidential funds from Secretary Lansing's office,
this small force was composed of agents from the
U.S. Secret Service, who specialized in counterfeit currency, and agents of the
U.S. Postal Inspection Service (USPIS), which had the best forensic laboratory in the country.
The agents were overseen by a junior
Foreign Service officer
A Foreign Service officer (FSO) is a commissioned member of the United States Foreign Service. FSOs formulate and implement the foreign policy of the United States. They spend most of their careers overseas as members of U.S. embassies, cons ...
,
Leland Harrison. Tasked primarily with
counterespionage and counterintelligence, the team also investigated passport fraud, protected U.S. and foreign diplomats on U.S. soil, and processed threat reports from overseas posts. Following U.S. entry into the war, the Bureau also interned and exchanged diplomatic officials of enemy powers.
After the war ended, Congress passed laws requiring American citizens to return with passports and resident aliens to enter with visas. State Department agents began investigating subsequent instances of passport and visa fraud. Around this same time State Department agents began protecting distinguished visitors to the United States.
By the 1920s, the chief special agent no longer reported his office's activities directly to the Secretary of State, instead answering to the
assistant secretary of state for administration
The assistant secretary of state for administration is the head of the Bureau of Administration in the United States Department of State. The assistant secretary of state for administration reports to the Under Secretary of State for Management ...
. Within the next two decades major passport fraud activities were detected and neutralized worldwide, often involving both
Communists
Communism () is a sociopolitical, philosophical, and economic ideology within the socialist movement, whose goal is the creation of a communist society, a socioeconomic order centered on common ownership of the means of production, d ...
and
Nazis
Nazism (), formally named National Socialism (NS; , ), is the far-right politics, far-right Totalitarianism, totalitarian socio-political ideology and practices associated with Adolf Hitler and the Nazi Party (NSDAP) in Germany. During H ...
.
Office of Security
During
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
, State Department agents were once again involved in interning and exchanging diplomatic officials of enemy powers. Around this time, the chief special agent's office became known as SY (short for
Office of Security), which in turn was under the Administration Bureau of the Management Undersecretary. After World War II, SY began expanding its presence overseas, with numerous
Regional Security Officer (RSO) positions created in overseas posts.
In 1961,
Otto Otepka, then a deputy director of SY, brought to the attention of the
U.S. Senate Internal Security Subcommittee deficiencies in the State Department clearance process.
The allegations were traced all the way up to then
secretary of state Dean Rusk. Despite multiple awards, appeals from multiple U.S. Senators and not backing down, Secretary Rusk removed Otepka from his position and ultimately unceremoniously fired him.
Starting sometime after World War II, SY began regularly protecting visiting heads of state, but it had done so sporadically since the 1930s. Before his departure in 1947, SY director Bannerman began codifying procedures for overseas security. This process continued in the late 1940s, with a number of RSO positions being created.
From that time and through the early 1970s, the number of agents remained relatively small, hovering around 300, with more than half of these serving overseas at any given time. The
April 1983 U.S. embassy bombing was a catharsis for the State Department, which would transform SY into the newly created Diplomatic Security Service, part of the Bureau of Diplomatic Security.
Diplomatic Security Service
Congress formed a commission headed by
Admiral Bobby Ray Inman to look into the bombings of U.S. diplomatic facilities in Beirut. The resultant
Inman Report recommended that security at the State Department needed to be elevated to a higher priority.
In 1985, Congress created the
Bureau of Diplomatic Security
The Bureau of Diplomatic Security, commonly known as Diplomatic Security (DS), is the security branch of the United States Department of State. It conducts international investigations, threat analysis, cyber security, counterterrorism, and pr ...
(DS), headed by the
assistant secretary of state for diplomatic security
The assistant secretary of state for diplomatic security is the head of the Bureau of Diplomatic Security in the United States Department of State. The assistant secretary of state for diplomatic security reports to the Under Secretary of State ...
, and the Diplomatic Security Service (DSS), headed by the Director of DSS, who is subordinate to the assistant secretary of state for DS. However, DSS is the federal law enforcement agency, and not the Bureau of Diplomatic Security (DS).
The director of DSS is an active DSS agent and is often referred as the
principal deputy assistant secretary (PDAS), as he/she is senior to the various assistant directors of diplomatic security who hold positions equivalent to
deputy assistant secretary (DAS).
The PDAS designation signifies the DSS director's preeminence over the other DASs within DSS, while at the same time signifying his/her position under the assistant secretary of state for Diplomatic Security.
The first assistant secretaries for DS were senior
Foreign Service officer
A Foreign Service officer (FSO) is a commissioned member of the United States Foreign Service. FSOs formulate and implement the foreign policy of the United States. They spend most of their careers overseas as members of U.S. embassies, cons ...
s, while the last several have been retired senior DSS special agents. With the creation of DSS, its ranks grew to well over 1,000 agents. However, by the mid-1990s, budget cutbacks were foisted on the U.S. State Department by Congress, and the department in turn trimmed the budget of DSS to the point where it had dwindled to a little over 600 agents.
Although DSS was by then a bureau within the State Department, the vast majority of RSOs overseas continued to report to the administration officer. This changed in 1999, as fallout from the
East Africa embassy bombings of 1998.
The terse message from the then
undersecretary for management announcing the immediate change made it clear that this action was against his best judgment and insinuated that it was done because then Secretary of State Madeleine Albright ordered it.
This change stripped DSS out from under administration officers and placed the RSO directly under the deputy chief of mission (DCM) in the chain of command at an embassy.
Structure and organization

Outside the Department of State, there is much confusion about the relationship between the
Bureau of Diplomatic Security
The Bureau of Diplomatic Security, commonly known as Diplomatic Security (DS), is the security branch of the United States Department of State. It conducts international investigations, threat analysis, cyber security, counterterrorism, and pr ...
(DS) and the Diplomatic Security Service (DSS).
DS oversees all security-related matters at the Department of State, which includes security at U.S. embassies and consulates. DS has approximately 40,000 employees, of whom roughly 2,500 are Foreign Service specialists within DSS.
As such, DSS is the primary mechanism by which the Bureau of Diplomatic Security accomplishes its law enforcement (criminal investigative) and security missions.
The Bureau of Diplomatic Security is headed by the
assistant secretary of state for diplomatic security
The assistant secretary of state for diplomatic security is the head of the Bureau of Diplomatic Security in the United States Department of State. The assistant secretary of state for diplomatic security reports to the Under Secretary of State ...
, who in turn is served by several deputy assistant secretaries (DAS). The principal deputy assistant secretary (PDAS) is the director for the Diplomatic Security Service (DSS) and is an active DSS special agent.

All employees who work for Bureau of Diplomatic Security, including those of DSS, are referred to as DS employees. DSS special agents are frequently assigned to positions within DSS, but occasionally work outside of their bureau structure.
For example, while assigned overseas, Department of State employees are evaluated by their superiors at the embassy or consulate to which they are assigned. In the case of DSS agents, the RSO (senior special agent at post) is rated by the deputy chief of mission and reviewed by the chief of mission (ambassador). DSS hierarchy has no input on the agent's evaluation, though it does provide instructions to the agent.
Protection mission
DSS is best identified with its protection assignments around the globe. The largest permanent
dignitary protection detail carried out by DSS agents is on the
United States secretary of state
The United States secretary of state (SecState) is a member of the executive branch of the federal government of the United States and the head of the U.S. Department of State.
The secretary of state serves as the principal advisor to the ...
. The
ambassador to the United Nations also has an ongoing protection detail.
Some U.S. ambassadors receive protection from DSS in addition to security provided overseas by the host countries, depending on their post.
200px, DSS special agents prepare for Secretary of State to exit a meeting with North Korean leader Kim Jong un">Supreme Leader (North Korean title)">North Korean leader Kim Jong un in Pyongyang">Kim_Jong_un.html" ;"title="Supreme Leader (North Korean title)">North Korean leader Kim Jong un">Supreme Leader (North Korean title)">North Korean leader Kim Jong un in Pyongyang.
Protection of visiting foreign ministers and senior officials from major nations, heads of states and governments not officially recognized by the U.S, heads of major international organizations and high ranking diplomats are typically covered by DSS. Notable protection details include most major members of the
British royal family
The British royal family comprises Charles III and other members of his family. There is no strict legal or formal definition of who is or is not a member, although the Royal Household has issued different lists outlining who is considere ...
, the
Fourteenth Dalai Lama, Palestinian Authority president
Mahmoud Abbas
Mahmoud Abbas (; born 15 November 1935), also known by the Kunya (Arabic), kunya Abu Mazen (, ), is a Palestinian politician who has been serving as the second president of Palestine and the President of the Palestinian National Authority, P ...
,
Princess Diana,
Yasser Arafat
Yasser Arafat (4 or 24 August 1929 – 11 November 2004), also popularly known by his Kunya (Arabic), kunya Abu Ammar, was a Palestinian political leader. He was chairman of the Palestine Liberation Organization (PLO) from 1969 to 2004, Presid ...
,
Tsai Ing-wen
Tsai Ing-wen (; pinyin: ''Cài Yīngwén''; born 31 August 1956) is a Taiwanese politician and legal scholar who served as the seventh president of the Republic of China (Taiwan) from 2016 to 2024. A member of the Democratic Progressive Party ...
and
Boris Yeltsin
Boris Nikolayevich Yeltsin (1 February 1931 – 23 April 2007) was a Soviet and Russian politician and statesman who served as President of Russia from 1991 to 1999. He was a member of the Communist Party of the Soviet Union (CPSU) from 1961 to ...
. DSS may also provide protection to high-risk private individuals visiting the United States, such as prominent foreign dissidents or opposition leaders.
While DSS protects visiting foreign dignitaries, the U.S. Department of State's
Office of Foreign Missions is responsible for the protection of foreign embassies and consulates on U.S. soil.
Since DSS does not have a true uniformed force with police powers, other agencies or local police departments are reimbursed for providing this service; two notable are the
Secret Service Uniformed Division in Washington, D.C. and the
New York City Police Department
The City of New York Police Department, also referred to as New York City Police Department (NYPD), is the primary law enforcement agency within New York City. Established on May 23, 1845, the NYPD is the largest, and one of the oldest, munic ...
.
During the annual
United Nations General Assembly
The United Nations General Assembly (UNGA or GA; , AGNU or AG) is one of the six principal organs of the United Nations (UN), serving as its main deliberative, policymaking, and representative organ. Currently in its Seventy-ninth session of th ...
(UNGA) meeting in September, DSS, as well as the U.S. Secret Service and other federal agencies, protect hundreds of foreign dignitaries as they visit New York City.
DSS has the authority to provide protection for foreign heads of state and was the lead agency for this role through the early 1970s. However, an order signed by President
Richard Nixon
Richard Milhous Nixon (January 9, 1913April 22, 1994) was the 37th president of the United States, serving from 1969 until Resignation of Richard Nixon, his resignation in 1974. A member of the Republican Party (United States), Republican ...
gave primary responsibility of protection of visiting heads of state to the Secret Service.
Investigations

DSS investigations, carried out by numerous field offices and resident agent offices throughout the U.S, and by RSOs overseas, focus mainly on passport or visa fraud. DSS special agents also investigate such cases as human and sex trafficking, document fraud, international parental kidnapping, child exploitation, violations of the Protect Act, assaults on federally protected persons, fugitive arrests overseas (with host nation assistance),
counterterrorism
Counterterrorism (alternatively spelled: counter-terrorism), also known as anti-terrorism, relates to the practices, military tactics, techniques, and strategies that governments, law enforcement, businesses, and Intelligence agency, intelligence ...
and
counterintelligence
Counterintelligence (counter-intelligence) or counterespionage (counter-espionage) is any activity aimed at protecting an agency's Intelligence agency, intelligence program from an opposition's intelligence service. It includes gathering informati ...
(CI) investigations and international
organized crime
Organized crime is a category of transnational organized crime, transnational, national, or local group of centralized enterprises run to engage in illegal activity, most commonly for profit. While organized crime is generally thought of as a f ...
cases. If there is a nexus to passport and/or visa fraud, use of State Department documents, diplomatic activities, the U.S. Foreign Service, or terrorism, DSS is typically involved.
According to the
Bureau of Justice Statistics
The Bureau of Justice Statistics (BJS) of the U.S. Department of Justice is the principal federal agency responsible for measuring crime, criminal victimization, criminal offenders, victims of crime, correlates of crime, and the operation of c ...
(BJS) Federal Criminal Case Processing Statistics, the Department of State is responsible for roughly 200 domestic criminal arrests per year from 2011-2019 (with drop-offs due to COVID-19 and other internal factors resulting in a reduction of over 50% in 2020 and 2021).
Passport and visa fraud
U.S. passports and visas are valuable travel documents, and consequently some foreign nationals fraudulently acquire U.S. passports and visas to carry out criminal activities, including terrorism, inside the borders of the United States.
It is a federal offense to apply, or assist someone in applying, for a U.S. passport or visa when they are not entitled to one. Usually this means an alien in the U.S. trying to establish a false U.S. identity, or stealing the identity from an American, often one who has died.
Visa fraud can also include participating in
sham marriage
A sham marriage or fake marriage is a marriage of convenience entered into without intending to create a real marital relationship. This is usually for the purpose of gaining an advantage from the marriage.
Definitions of sham marriage vary b ...
s in order to allow an unentitled foreigner to become a U.S. citizen.
Sometimes Americans, including
Foreign Service officer
A Foreign Service officer (FSO) is a commissioned member of the United States Foreign Service. FSOs formulate and implement the foreign policy of the United States. They spend most of their careers overseas as members of U.S. embassies, cons ...
s (FSOs), are the target of DSS investigations, such as an FSO selling visas for personal gain. DSS also investigates other alleged improper or illegal behavior by Department of State personnel, to include incidents of espionage. Such cases would involve other agencies, such as the Department of Justice.
Overseas DSS must take the role of local and state law enforcement when investigating issues such as spousal or child abuse by U.S. government personnel assigned to the embassy. This is because the host country will not investigate or prosecute diplomats, who are considered to have immunity from their laws. DSS also conducts tens of thousands of background investigations per year – not just for the Department of State, but for other federal agencies as well.
In recent years, DSS has expanded its overseas investigations program with DSS special agents serving as overseas criminal investigators (OCIs). These agents are given special training in consular functions and are commissioned consular officers.
However, they spend a large amount of their time working with the fraud units in consular sections, investigating visa and passport fraud, as well as crimes that have a nexus to those documents, including terrorism, organized crime, trafficking in persons, and narcotics violations.
At the U.S. border, OCIs may work alien smuggling, human trafficking, and passport and visa fraud cases with
U.S. Customs and Border Protection (CBP) and Homeland Security Investigations. In addition, OCIs also have responsibilities outside of their respective consular assignments for mission security.
Counterintelligence
The DSS Office of Investigations and Counterintelligence conducts a robust
counterintelligence
Counterintelligence (counter-intelligence) or counterespionage (counter-espionage) is any activity aimed at protecting an agency's Intelligence agency, intelligence program from an opposition's intelligence service. It includes gathering informati ...
program designed to deter, detect, and neutralize the efforts of foreign intelligence services targeting Department of State personnel, facilities, and diplomatic missions worldwide.
The office's counterintelligence division conducts aggressive counterintelligence inquires and counterespionage investigations with other U.S. government agencies. Counterespionage investigations are conducted in coordination with the
FBI
The Federal Bureau of Investigation (FBI) is the domestic Intelligence agency, intelligence and Security agency, security service of the United States and Federal law enforcement in the United States, its principal federal law enforcement ag ...
in accordance with their legal mandates.
The division conducts numerous counterintelligence and security awareness training programs for all U.S. government personnel requesting or having access to sensitive
Department of State facilities and information.
All training programs enhance the understanding of both foreign intelligence and espionage threats and countermeasures, and educate employees on the foreign intelligence environment.
In addition, the office relies on a cadre of security engineers to deter, detect, and neutralize attempts by foreign intelligence services to technically penetrate U.S. office buildings and residences.
These efforts range from detecting a simple listening device in the wall to countering the most sophisticated electronic eavesdropping devices and systems.
On June 4, 2009, DSS and the FBI arrested former Department of State employee
Walter Kendall Myers on charges of serving as an illegal agent of the Cuban government for nearly 30 years and conspiring to provide classified U.S. information to the Cuban government. Myers’ arrest is the culmination of a three-year joint DSS/FBI investigation.
Counterterrorism
The Diplomatic Security Service maintains agents on dozens of
Joint Terrorism Task Forces around the country.
The Office of Protective Intelligence and Investigations (PII) in the Threat Intelligence and Analysis division has DSS special agents who travel all over the world investigating threats to the secretary of State and U.S. embassies and consulates.
Any time there is a threat or an attack against a U.S. embassy or consulate, DSS special agents are the first on the scene to investigate.
The
Rewards for Justice Program
Rewards for Justice Program (RFJ) is United States Department of State's national security interagency program that offers reward for information leading to the location or an arrest of leaders of terrorist groups, financiers of terrorism, inclu ...
(RFJ) is the counterterrorism rewards program of DSS. The secretary of State is currently offering rewards for information that prevents or favorably resolves acts of international terrorism against U.S. persons or property worldwide.
In the days following the April 15, 2013,
Boston Marathon bombing
The Boston Marathon bombing, sometimes referred to as simply the Boston bombing, was an Islamist domestic terrorist attack that took place during the 117th annual Boston Marathon on April 15, 2013. Brothers Tamerlan and Dzhokhar Tsarna ...
, DSS special agents investigated the incident along with personnel from the
FBI
The Federal Bureau of Investigation (FBI) is the domestic Intelligence agency, intelligence and Security agency, security service of the United States and Federal law enforcement in the United States, its principal federal law enforcement ag ...
,
HSI HSI may refer to:
Government and politics
* Croatian Syrmian Initiative, a political party in Serbia ()
* Hispanic-serving institution, an American college designation
* Homeland Security Investigations, an American law enforcement agency
* Human ...
,
State Police
State police, provincial police or regional police are a type of sub-national territorial police force found in nations organized as federations, typically in North America, South Asia, and Oceania. These forces typically have jurisdiction o ...
,
Boston Police,
Cambridge Police, and other law enforcement agencies; this led to the death of one suspect and the capture of the second suspect.
Other investigations
DSS investigates crimes against State Department personnel and other U.S. government personnel and families assigned under chief-of-mission authority at a U.S. embassy or consulate abroad.
DSS special agents have investigated thefts, assaults, rapes, and murders, among other charges, around the world.
Unlike investigations conducted in the United States by other federal agencies, DSS agents have to work jointly with their foreign counterparts in often hostile areas of the world.
On January 28, 2009,
CIA station chief Andrew Warren in
Algiers
Algiers is the capital city of Algeria as well as the capital of the Algiers Province; it extends over many Communes of Algeria, communes without having its own separate governing body. With 2,988,145 residents in 2008Census 14 April 2008: Offi ...
,
Algeria
Algeria, officially the People's Democratic Republic of Algeria, is a country in the Maghreb region of North Africa. It is bordered to Algeria–Tunisia border, the northeast by Tunisia; to Algeria–Libya border, the east by Libya; to Alger ...
, was reportedly under investigation by DSS for having allegedly raped two local women.
Fugitives
The Diplomatic Security Service is tasked with tracking and capturing
fugitives
A fugitive or runaway is a person who is fleeing from custody, whether it be from jail, a government arrest, government or non-government questioning, vigilante violence, or outraged private individuals. A fugitive from justice, also known ...
who have fled U.S. jurisdiction to avoid prosecution. DSS locates and helps return approximately 300 fugitives annually, often working with other U.S. law enforcement agencies, most notably the U.S. Marshals Service.
In 1995 DSS Special Agents Jeff Riner and Bill Miller, the RSOs assigned to the U.S. Embassy in Pakistan, along with Pakistani police and Inter-Services Intelligence (ISI), arrested Ramzi Yousef, who was the mastermind behind the 1993 World Trade Center bombing in New York City. Despite its press releases, the FBI played no role in his capture.
In another case, Jared Ravin Yaffe ran a child pornography ring between March and September 2008 by paying babysitters to give him access to children.
When police took note, Yaffe fled to North Carolina, Germany, Romania or Bulgaria, and finally Brazil. He traveled under his real name with his own passport and was chased by
U.S. Marshals.
On February 11, 2009, the United States District Court, Southern District of California issued a federal arrest warrant for Yaffe, and on April 11, Yaffe was profiled on the television show ''
America's Most Wanted''. Brazilian federal police caught him on May 11, and he was returned to the United States the next day, where he faced 20 counts in San Diego of child sexual assault, kidnapping, production of child pornography, and unlawful flight to avoid prosecution.
He initially pled not guilty, and his bail was set at $5 million.
A year after his capture, Yaffe pled guilty to several counts and was sentenced to 45 years to life in prison,
while a babysitter who had provided a child to him also pled guilty and was sentenced to 15 years to life in prison.
On September 19, 2009, special agents from DSS located Derrick Yancey, a former deputy sheriff from
DeKalb County, Georgia
DeKalb County (, , ) is located in the north central portion of the U.S. state of Georgia (U.S. state), Georgia. As of the 2020 United States census, 2020 census, the population was 764,382, making it Georgia's fourth-most populous county. Its ...
, in
Punta Gorda, Belize. Yancey was wanted in Georgia for double murder of his wife Linda Yancey and a day laborer.
On November 23, 2009, DSS special agents from the U.S. Embassy's
Regional Security Office (RSO) worked closely with the
U.S. Marshals Service, Guatemalan National Police, and
INTERPOL
The International Criminal Police Organization – INTERPOL (abbreviated as ICPO–INTERPOL), commonly known as Interpol ( , ; stylized in allcaps), is an international organization that facilitates worldwide police cooperation and crime cont ...
to locate alleged murder suspect 24-year-old Ariel Beau Patrick, who was taken into custody in Guatemala. Ariel Patrick was featured on America's Most Wanted.
On April 26, 2010, after failing to check in with pretrial services within two days of his April 21 hearing on his bond status,
Andrew Warren 42, was apprehended by a combined team of
Norfolk Police Department Fugitive Investigators, DSS special agents and
U.S. Marshals. Judge Ellen S. Huvelle of the U.S. District Court for the District of Columbia issued a bench warrant for the arrest of the former CIA officer.
On July 30, 2010, special agents from DSS located fugitive George Alvin Viste in Peru. Viste was wanted in Clark County, Washington, on seven different criminal charges including the rape of a child, child molestation, and incest. “Diplomatic Security’s
Regional Security Office in Lima worked closely with the
U.S. Marshals Service and our law enforcement counterparts (INTERPOL) in Peru to locate Viste,” said Jeffrey W. Culver, Director of the Diplomatic Security Service.
On October 8, 2010, DSS agents located Dario Sarimiento Tomas in Pampanga, Philippines. DSS worked with Philippine officials to apprehend Tomas, who was wanted in South Korea on charges that he defrauded an individual there of more than $200,000. Tomas was arrested by law enforcement officials from the Philippine National Bureau of Investigations and National Police. Tomas was assigned to the U.S. Embassy in Seoul as a Customs and Border Protection Officer.
On February 3, 2011, Paul Eischeid, a fugitive and member of the
Hells Angels
The Hells Angels Motorcycle Club (HAMC) is an international outlaw motorcycle club founded in California whose members typically ride Harley-Davidson motorcycles. In the United States and Canada, the Hells Angels are incorporated as the Hells ...
who had eluded
U.S. Marshals for nearly eight years, was arrested. The accused murderer was arrested in Buenos Aires. An Interpol Red Notice, as well as investigations by the U.S. Marshals Service and DSS in Argentina led to his capture.
On October 5, 2011, in cooperation with the U.S. Marshals Montana Violent Offender Task Force and Belize Police, DSS arrested Michael Patrick McNulty on a $100,000 warrant issued by the state of Montana.
On November 7, 2012,
U.S. Marshals Service (USMS) announces the capture of John Earl Gorham. The U.S. Parole Commission issued an arrest warrant for Gorham on Oct. 17, regarding the subject's original conviction of sodomy, kidnapping and assault with the intent to commit sodomy. Gorham was convicted and sentenced to 35 years on these charges.
Gorham was arrested for being drunk in public and for sexually assaulting a 14-year-old female at a Chantilly High School football game. The USMS and task force partners from the Diplomatic Security Service located Gorham at his residence on Church Lane in Bowie, MD.
The subject was arrested without incident and turned over to the U.S. District Court in the District of Columbia for prosecution.
On April 20, 2013, in coordination with Nicaraguan authorities, the FBI's Panama City Legal Attaché Office and the Diplomatic Security's Regional Security Office of the U.S. Embassy in Managua located Eric Justin Toth in Esteli, Nicaragua, where he was placed into custody. His arrest was the result of an exhaustive and well coordinated investigation by the FBI's Washington Field Office, the FBI legal attaché, and special agents of the Diplomatic Security Service assigned to the U.S. Embassy in Managua.
In May 2022, yoga instructor Kaitlin Armstrong fled the United States to Costa Rica. Accused of murdering cyclist Anna Moriah Wilson, Armstrong attempted to evade arrest by hiding in Santa Teresa, a small Costa Rican town popular with surfers and yoga enthusiasts. DSS investigators conducted an exhaustive search for Armstrong, eventually locating her. Costa Rican tourist officials arrested Armstrong. Two U.S. Marshals flew into Costa Rica to assist with the final elements of the investigation, and to help return her to the United States. In November 2023, Texas jury sentenced Armstrong to 90 years in federal prison for the murder of Wilson.
Overseas mission
Regional Security Officer (RSO)

The DSS presence overseas is led at each embassy and consulate by a DSS special agent known as a
regional security officer (RSO), who is in charge of the
Regional Security Office, and serves as the senior law enforcement advisor and security attaché to the U.S. ambassador.
Like all members of the
Foreign Service, DSS agents cannot remain posted in the U.S. for more than six consecutive years and must eventually be assigned to an overseas post.
Once assigned overseas, a DSS agent will typically serve first as a special agent called an assistant regional security officer (ARSO) in a regional security office. Agents who enjoy the overseas lifestyle will try to get a second tour in a special agent slot at a large embassy, or possibly serve as a regional security officer (RSO) at a small post or as a deputy regional security officer (DRSO) at a medium-sized post. Usually after two back-to-back overseas tours, agents will be encouraged to return to the U.S. and serve in a headquarters position before returning overseas as a regional security officer.
DSS has many special agents who serve as overseas criminal investigators (OCIs). These agents work out of the
consular sections of embassies and consulates instead of the regional security offices.
It is possible at larger overseas missions with multiple diplomatic facilities located in the same country to have multiple agents with the regional security officer title. India, for example, has an RSO position at the embassy at the Senior Foreign Service level and four other RSOs at the consulates at the significantly lower grade 3 level yet all of these agents have the same job title.
Sometimes the title senior regional security officer will be used to help prevent confusion or to indicate that the agent is the most senior in the country.
There are several other overseas positions filled by DSS agents. At new building construction sites, agents will serve as the site security manager (SSM) where they will supervise the overall security of the new building including the construction security technicians (CST) and cleared American guards (CAG). For construction at posts where there is a critical
counterintelligence
Counterintelligence (counter-intelligence) or counterespionage (counter-espionage) is any activity aimed at protecting an agency's Intelligence agency, intelligence program from an opposition's intelligence service. It includes gathering informati ...
(CI) threat, agents will also serve as CI investigators dedicated to preventing compromise of the most sensitive spaces within the new embassy.
It is common for domestically assigned DSS agents to serve temporary duty (TDY) at embassies overseas. Such duty can range from various types of protection duties to RSO support or security training for an overseas post, and may last for as little as a few days to multiple months. Likewise, hundreds of DSS agents assigned overseas travel to New York on TDY to support the
United Nations General Assembly
The United Nations General Assembly (UNGA or GA; , AGNU or AG) is one of the six principal organs of the United Nations (UN), serving as its main deliberative, policymaking, and representative organ. Currently in its Seventy-ninth session of th ...
every year.
DSS agents have often found themselves in harm's way, with four agents and more than a hundred others dying in the line of duty as of April 2024. The vast majority of DSS casualties had taken place within the five years in Iraq, where DSS continued to conduct its most critical and dangerous protective missions.
Overseas Criminal Investigations Division

The Overseas Criminal Investigations Division manages all DSS investigative forces abroad, namely overseas criminal investigators, DSS special agents responsible for ensuring the integrity of the U.S. passport and visa system.
Embedded in 120 diplomatic posts across 85 countries, there are roughly 130 OCIs who conduct criminal investigations and work with foreign governments to build a global law enforcement network; they maintain formal partnerships and training programs with foreign police, immigration, and customs officials to target a wide range of criminals, including forgers, smugglers, and terrorists.
The division's prevailing goal is to "combat crime where it originates rather than waiting for it to cross U.S. borders."
OCIs have locally employed staff, called criminal fraud investigators and foreign service national investigators, to assist with investigations, locating fugitives, and liaising with host nation counterparts.
With its global partners, OCIs help locate and return an average of 300 fugitives to the U.S. annually; missions have included dismantling major human smuggling networks, identifying criminals involved in child exploitation and pornography, ending international scams, and disrupting suspected terrorist travel.
Special event security
In addition to being posted at U.S. missions around the world, DSS agents have worked closely with their foreign counterparts to secure such events as the 2008
Olympic Games
The modern Olympic Games (Olympics; ) are the world's preeminent international Olympic sports, sporting events. They feature summer and winter sports competitions in which thousands of athletes from around the world participate in a Multi-s ...
in
Beijing
Beijing, Chinese postal romanization, previously romanized as Peking, is the capital city of China. With more than 22 million residents, it is the world's List of national capitals by population, most populous national capital city as well as ...
,
China
China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...
, the 2007
Pan American Games
The Pan American Games, known as the Pan Am Games, is a continental multi-sport event in the Americas. It features thousands of athletes participating in competitions to win different summer sports. It is held among athletes from nations of th ...
in
Rio de Janeiro
Rio de Janeiro, or simply Rio, is the capital of the Rio de Janeiro (state), state of Rio de Janeiro. It is the List of cities in Brazil by population, second-most-populous city in Brazil (after São Paulo) and the Largest cities in the America ...
,
Brazil
Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...
, 2006
Winter Olympic Games
The Winter Olympic Games (), also known as the Winter Olympics, is a major international multi-sport event held once every four years for sports practiced on snow and ice. The first Winter Olympic Games, the 1924 Winter Olympics, were held in ...
in
Turin
Turin ( , ; ; , then ) is a city and an important business and cultural centre in northern Italy. It is the capital city of Piedmont and of the Metropolitan City of Turin, and was the first Italian capital from 1861 to 1865. The city is main ...
,
Italy
Italy, officially the Italian Republic, is a country in Southern Europe, Southern and Western Europe, Western Europe. It consists of Italian Peninsula, a peninsula that extends into the Mediterranean Sea, with the Alps on its northern land b ...
; the 2010 Winter Olympics in
Vancouver, Canada, 2010
World Cup Football Matches and a host of other special events.
While the Olympics are the most well-known events, DSS agents have worked with host country security on numerous other large-scale events around the world. For events with a large U.S. presence, such as the Olympics, an Olympic Security Coordinator – always a DSS agent – will be named to manage all of the security and liaison with the host government.
All other federal agencies, such as the
FBI
The Federal Bureau of Investigation (FBI) is the domestic Intelligence agency, intelligence and Security agency, security service of the United States and Federal law enforcement in the United States, its principal federal law enforcement ag ...
,
ATF,
USSS, and
DOD components, will report to the DSS agent in charge.
Hiring process
The DSS special agent hiring process is widely regarded as one of the most difficult and challenging within both the federal government and general law enforcement.
It is believed that less than 1% of applicants successfully complete and pass the hiring process. Special agent candidates must successfully pass an intensive multi-stage evaluation process that includes a series of written exams, knowledge-based exams, writing samples, panel interviews, and
situational judgment exercises; a physical fitness test (PFT); a comprehensive medical examination granting worldwide availability; and an exhaustive background investigation for
security clearance
A security clearance is a status granted to individuals allowing them access to classified information (state or organizational secrets) or to restricted areas, after completion of a thorough background check. The term "security clearance" is ...
at the level of
Top Secret/Sensitive Compartmented Information (TS/SCI).
A final suitability review and vote by a Foreign Service panel evaluates a candidate's overall ability to represent the interests of the United States abroad.
All DSS special agents have at least a four-year bachelor's degree, and most have graduate and/or post-graduate degrees. Special Agent candidates must be under the age of 37 at the time of commissioning, unless granted a waiver due to prior military service.
Training
After a new agent candidate is hired, he or she begins a nearly nine-month training program that includes the Criminal Investigator Training Program (CITP) at the U.S. Department of Homeland Security's (FLETC) in ; a Basic Special Agent Course (BSAC) at the Diplomatic Security Training Center (DSTC) and Foreign Affairs Security Training Center (FASTC), and courses at the
Foreign Service Institute
The Foreign Service Institute (FSI) is the United States federal government's primary training institution for members of the U.S. foreign service community, preparing American diplomats as well as other professionals to advance U.S. foreign ...
(FSI) in Arlington, Virginia.
After completion of all initial training, agents are required to pass quarterly re-qualifications on their duty weapons, which include the Glock 19M, Glock 26, Colt Sub Machine Gun, the Mk18 rifle, and Remington 870 shotgun.
A new special agent is assigned to a domestic field office for two to three years before typically taking on an overseas assignment, although an agent can expect to be sent on frequent temporary duty assignments overseas even when assigned to a domestic post.
However, agents may be called overseas much earlier depending on the needs of DSS.
As members of the Foreign Service, DSS special agents spend nearly half of their careers living and working overseas, often in hazardous environments and/or less developed countries throughout the world.


* Basic Special Agent Course (BSAC) (including FLETC): 9 months
* Basic Regional Security Office Course (RSO School): 3 months
* Advanced Tactics and Leadership (ATLaS): 11 weeks
* Language Training: 2–12 months per language
* Basic Field Firearms Officer Course (BFFOC): 2 weeks
* High Risk Environment Firearms Course (HREFC): 3 days
Weapons
When assigned to the United States, special agents are authorized to carry firearms both on and off duty. When assigned overseas, they are authorized to carry firearms when approved by the chief of mission
These and other weapons systems may be employed by DSS special agents assigned to high-threat locations. The agents going to those locations attend additional training (ATLaS/HTOC) in these weapons before they are deployed.
Leadership
Bureau of Secret Intelligence directors
Also known as Office of the Chief Special Agent.
*
Robert Lansing (1916), Secretary of State exercising direct control over the Bureau of Secret Intelligence
*
Leland Harrison (1916), Special Assistant who reports to the deputy secretary of state (Counselor –
Frank L. Polk)
* Joseph Nye (1917–1920), first chief special agent
*
Robert C. Bannerman (1920–1940), father of future SY director
* Thomas F. Fitch (1940–1947)
Office of Security directors
*
Robert L. Bannerman (1945–1947), father of third generation SY/DS agent
* Donald Nicholson (1948–1952)
* John Ford (1952–1953)
* Dennis Flinn (1953–1956)
*
E. Tomlin Bailey (1956–1958)
*
William O. Boswell (1958–1962), father of future DS assistant secretary of state
Eric J. Boswell
**
Otto Otepka, deputy director (1959–1962)
*
John Francis Reilly (1962–1963)
*
G. Marvin Gentile (1964–1974) former FBI special agent and CIA security officer
*
Viktor Dikeos (1974–1978)
*
Karl Ackerman (1978–1982), former SY special agent and FBI special agent
*
Marvin Garrett (1982–1983)
*
David C. Fields (1984–1985)
*David A. Boling (SY special agent and diplomatic officer)
DSS directors
The director of the DSS is also the principal deputy assistant secretary of state for the
Bureau of Diplomatic Security
The Bureau of Diplomatic Security, commonly known as Diplomatic Security (DS), is the security branch of the United States Department of State. It conducts international investigations, threat analysis, cyber security, counterterrorism, and pr ...
, reporting to an
assistant secretary of state.
Fatalities
Since the establishment of the Diplomatic Security Service, four special agents have died in the line of duty. As of March 2016, a further 133 locally engaged DSS staff, host country law enforcement personnel and members of the US military had been killed while undertaking diplomatic security duties.
See also
*
Bureau of Diplomatic Security bibliography
*
Europol
Europol, officially the European Union Agency for Law Enforcement Cooperation, is the law enforcement agency of the European Union (EU). Established in 1998, it is based in The Hague, Netherlands, and serves as the central hub for coordinating c ...
*
Federal Protective Service (FSO), a Russian service that among other security activities provides protection to
state visits
*
Office of Mobile Security Deployments (MSD), Diplomatic Security Service's tactical unit
*
Office of the Inspector General of the Department of State
*
Parliamentary and Diplomatic Protection, a British police unit providing protection to foreign diplomats and heads of state visiting the UK, part of the
Metropolitan Police Service
*
U.S. Border Patrol
*
Marine Security Guard
A Marine Security Guard (MSG), also known as a Marine Embassy Guard, is a member of the Marine Corps Embassy Security Group (formerly Marine Security Guard Battalion), a brigade-sized organization of the United States Marine Corps (USMC) whose de ...
*
United States Army Counterintelligence (USACI)
Military Criminal Investigative Organizations
*
Air Force Office of Special Investigations (AFOSI or OSI)
*
Naval Criminal Investigative Service
The United States Naval Criminal Investigative Service (NCIS) is the primary investigative law enforcement agency of the United States Department of the Navy. Its primary function is to investigate major criminal activities involving the Nav ...
(NCIS)
*
United States Army Criminal Investigation Command (USACIDC or CID)
*
Coast Guard Investigative Service (CGIS)
Notes
References
2001–2009.state.gov*
usnews.com
External links
DSS Facebook PagePhotosDiplomatic Security Wiki
{{authority control
Bureau of Diplomatic Security
Specialist law enforcement agencies of the United States