United States government security breaches
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This page is a timeline
Timeline
A timeline is a way of displaying a list of events in chronological order, sometimes described as a project artifact . It is typically a graphic design showing a long bar labeled with dates alongside itself and events labeled on points where they would have happened.-Uses of timelines:Timelines...

 of published security lapses in the United States government. These lapses are frequently referenced in congressional and non-governmental oversight. This article does not attempt to capture security vulnerabilities.

1940s

  • June 1941 - Fritz Joubert Duquesne (also known as "The man who killed Kitchener
    Herbert Kitchener, 1st Earl Kitchener
    Field Marshal Horatio Herbert Kitchener, 1st Earl Kitchener KG, KP, GCB, OM, GCSI, GCMG, GCIE, ADC, PC , was an Irish-born British Field Marshal and proconsul who won fame for his imperial campaigns and later played a central role in the early part of the First World War, although he died halfway...

    ") was arrested by the Federal Bureau of Investigation
    Federal Bureau of Investigation
    The Federal Bureau of Investigation is an agency of the United States Department of Justice that serves as both a federal criminal investigative body and an internal intelligence agency . The FBI has investigative jurisdiction over violations of more than 200 categories of federal crime...

     (FBI) with two associates, on charges of relaying secret information on Allied weaponry and shipping movements to Nazi Germany
    Germany
    Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

    . On January 2, 1942, 33 members of the Duquesne Spy Ring
    Duquesne Spy Ring
    The Duquesne Spy Ring is the largest espionage case in United States history that ended in convictions. A total of thirty-three members of a German espionage network headed by Frederick "Fritz" Joubert Duquesne were convicted after a lengthy espionage investigation by the Federal Bureau of...

    , the largest espionage ring conviction in the history of the United States, were sentenced to serve a total of over 300 years in prison. William G. Sebold
    William G. Sebold
    William G. Sebold , born Wilhelm Georg Debrowski in Mülheim, Germany, was a German spy in the United States during World War II, who became a double agent for the FBI.-Early life:...

    , a double agent
    Double agent
    A double agent, commonly abbreviated referral of double secret agent, is a counterintelligence term used to designate an employee of a secret service or organization, whose primary aim is to spy on the target organization, but who in fact is a member of that same target organization oneself. They...

    , was instrumental to the capture and conviction. One German spymaster later commented that the ring’s roundup delivered ‘the death blow’ to their espionage
    Espionage
    Espionage or spying involves an individual obtaining information that is considered secret or confidential without the permission of the holder of the information. Espionage is inherently clandestine, lest the legitimate holder of the information change plans or take other countermeasures once it...

     efforts in the United States. The 1945 film The House on 92nd Street
    The House on 92nd Street
    The House on 92nd Street is a 1945 black-and-white spy film directed by Henry Hathaway. The film, shot mainly in New York City, was released shortly after the end of World War II. The House on 92nd Street was made with the full cooperation of the Federal Bureau of Investigation , and its head, J....

    was a thinly disguised version of the uncovering of this spy ring.

1950s

  • July 1950 - Alfred Sarant
    Alfred Sarant
    Alfred Epaminondas Sarant, also known as Filipp Georgievich Staros and Philip Georgievich Staros , was an engineer and a member of the Communist party in New York City in 1944. He was part of the Rosenberg spy ring that reported to Soviet intelligence...

     was interviewed and released by the FBI. He and Joel Barr
    Joel Barr
    Joel Barr , also Iozef Veniaminovich Berg and Joseph Berg, was part of the Soviet Atomic Spy Ring...

     were recruited in November 1944 by Julius Rosenberg for the Soviet Union to spy at the United States Army Signal Corps
    United States Army Signal Corps
    The United States Army Signal Corps develops, tests, provides, and manages communications and information systems support for the command and control of combined arms forces. It was established in 1860, the brainchild of United States Army Major Albert J. Myer, and has had an important role from...

     laboratories, where they worked. They both escaped to the Eastern Bloc
    Eastern bloc
    The term Eastern Bloc or Communist Bloc refers to the former communist states of Eastern and Central Europe, generally the Soviet Union and the countries of the Warsaw Pact...

    .

  • March 1950 - Klaus Fuchs
    Klaus Fuchs
    Klaus Emil Julius Fuchs was a German theoretical physicist and atomic spy who in 1950 was convicted of supplying information from the American, British and Canadian atomic bomb research to the USSR during and shortly after World War II...

     was convicted in England of espionage for the Soviet Union from 1941–1949. During that time he became a British citizen and worked in the United states at Los Alamos
    Los Alamos National Laboratory
    Los Alamos National Laboratory is a United States Department of Energy national laboratory, managed and operated by Los Alamos National Security , located in Los Alamos, New Mexico...

     and later in England at the Harwell Atomic Energy Research Establishment.

  • ca 1950 - David Greenglass
    David Greenglass
    David Greenglass was an atomic spy for the Soviet Union who worked in the Manhattan project. He was the brother of Ethel Rosenberg.-Biography:...

     confessed to and was convicted of espionage. He was recruited by his in-laws, Julius and Ethel Rosenberg
    Julius and Ethel Rosenberg
    Ethel Greenglass Rosenberg and Julius Rosenberg were American communists who were convicted and executed in 1953 for conspiracy to commit espionage during a time of war. The charges related to their passing information about the atomic bomb to the Soviet Union...

     to provide secrets from Los Alamos
    Los Alamos National Laboratory
    Los Alamos National Laboratory is a United States Department of Energy national laboratory, managed and operated by Los Alamos National Security , located in Los Alamos, New Mexico...

     from 1944–1946.

  • 1951 - Theodore Hall
    Theodore Hall
    Theodore Alvin Hall was an American physicist and an atomic spy for the Soviet Union, who, during his work on US efforts to develop the first atomic bomb during World War II , gave a detailed description of the "Fat Man" plutonium bomb, and of processes for purifying plutonium, to Soviet...

     was interviewed by the FBI for handing atomic weapons secrets to the Soviet Union. He was not prosecuted, but later admitted to giving secrets to the Soviet Union.

1970s

  • January 1977 - Christopher John Boyce
    Christopher John Boyce
    Christopher John Boyce is a convicted KGB who sold U.S. spy satellite secrets to the Soviet Union in the 1970s.-Espionage:...

     (born February 16, 1953) was convicted of spying against the United States for the Soviet Union. He was arrested in January 1977 for selling U.S. spy satellite secrets to the Soviet Union. Boyce was convicted in April of espionage and sentenced to 40 years in prison at the federal penitentiary in Lompoc, California. On January 21, 1980, Boyce escaped from Lompoc. While a fugitive, Boyce carried out 17 bank robberies in Idaho and Washington state. Boyce did not believe he could live as a fugitive forever and began to study aviation in an attempt to flee to the Soviet Union, where he would accept a commission as an officer in the Soviet Armed Forces. On August 28, 1981, Boyce was arrested while eating in his car outside "The Pit Stop," a drive-in restaurant in Port Angeles, WA.

1980s

  • October 1980 - David Henry Barnett
    David Henry Barnett
    David Henry Barnett , was a CIA officer who was convicted of espionage for the Soviet Union in 1980, becoming only the second CIA officer to such a fate after Edwin Moore II, a retired CIA employee who was arrested by the FBI in 1976 after attempting to sell classified documents to Soviet...

    , a retired CIA officer pleaded guilty to espionage charges, admitting that he had sold CIA secrets to the Soviets. He was sentenced to 18 years’ imprisonment and was paroled in 1990. He died on November 19, 1993.

  • May 1985 - John Anthony Walker
    John Anthony Walker
    John Anthony Walker, Jr. is a former United States Navy Chief Warrant Officer and communications specialist convicted of spying for the Soviet Union from 1968 to 1985, at the height of the Cold War...

    , a retired United States Naval
    United States Navy
    The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

     Chief Warrant Officer
    Chief Warrant Officer
    Chief warrant officer is a military rank used by the Canadian Forces and the Israel Defence Forces.-Canada:In the Canadian Forces, a chief warrant officer or CWO is the most senior non-commissioned member rank in the Canadian Army and the Royal Canadian Air Force...

     was arrested for selling encryption information and other classified documents to the Soviet Union, starting in 1967. He was convicted of espionage and is serving a sentence in a federal prison.

  • June 1986 - Jonathan Jay Pollard, a United States Naval civilian intelligence
    Intelligence (information gathering)
    Intelligence assessment is the development of forecasts of behaviour or recommended courses of action to the leadership of an organization, based on a wide range of available information sources both overt and covert. Assessments are developed in response to requirements declared by the leadership...

     analyst was convicted on one count of spying for Israel
    Israel
    The State of Israel is a parliamentary republic located in the Middle East, along the eastern shore of the Mediterranean Sea...

    , receiving a life sentence with a recommendation against parole
    Parole
    Parole may have different meanings depending on the field and judiciary system. All of the meanings originated from the French parole . Following its use in late-resurrected Anglo-French chivalric practice, the term became associated with the release of prisoners based on prisoners giving their...

    .

  • August 1988 - Clyde Lee Conrad
    Clyde Lee Conrad
    Clyde Lee Conrad was an U.S. Army non-commissioned officer who, from 1974 until his arrest on August 23, 1988, sold top secret classified information to the People's Republic of Hungary, including top secret NATO war plans...

    , a member of the United States military was arrested for selling NATO defense plans to Hungary from 1974 to 1988. He was convicted by a German court of treason and espionage in 1990 and died in prison.

1990s

  • June 1990 - Ronald Hoffman was arrested for selling classified software that he developed for Science Applications International Corporation
    Science Applications International Corporation
    SAIC is a FORTUNE 500 scientific, engineering and technology applications company headquartered in the United States with numerous federal, state, and private sector clients...

     under a contract for the United States Air Force
    United States Air Force
    The United States Air Force is the aerial warfare service branch of the United States Armed Forces and one of the American uniformed services. Initially part of the United States Army, the USAF was formed as a separate branch of the military on September 18, 1947 under the National Security Act of...

     to foreign companies. He was convicted in 1992 of violations of the Arms Export Control Act and the Comprehensive Anti-Apartheid Act and was sentenced to 30 months in prison.

  • February 1991 - Charles Lee Francis Anzalone, a Corporal
    Corporal
    Corporal is a rank in use in some form by most militaries and by some police forces or other uniformed organizations. It is usually equivalent to NATO Rank Code OR-4....

     in the United States Marines, was arrested for attempted espionage after passing documents and a security badge to an FBI agent posing as a KGB intelligence officer. He was convicted in May and sentenced to 15 years in prison for this and other charges.

  • April 1991 - Jeffrey Carney
    Jeffrey Carney
    Jeffrey Carney is a former U.S. Air Force intelligence specialist convicted of spying for East Germany. One of the Stasi's most successful spies, code-named "The Kid", Carney handed over U.S. military documents while working in West Berlin for the Air Force...

     was arrested for providing classified documents to the East German government between 1982 and 1984, while stationed in Berlin with the United States Air Force
    United States Air Force
    The United States Air Force is the aerial warfare service branch of the United States Armed Forces and one of the American uniformed services. Initially part of the United States Army, the USAF was formed as a separate branch of the military on September 18, 1947 under the National Security Act of...

    . He deserted and defected to East Germany in 1985. He pleaded guilty to espionage, conspiracy, and desertion and was sentenced to 38 years in prison, but was released after 11 years.

  • March 1991 - Albert T. Sombolay was arrested and admitted to providing military information regarding the Desert Shield deployment, military identification cards, and chemical weapons equipment to Jordan
    Jordan
    Jordan , officially the Hashemite Kingdom of Jordan , Al-Mamlaka al-Urduniyya al-Hashemiyya) is a kingdom on the East Bank of the River Jordan. The country borders Saudi Arabia to the east and south-east, Iraq to the north-east, Syria to the north and the West Bank and Israel to the west, sharing...

    , while he was stationed in Germany
    Germany
    Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

    . He was a naturalized U.S. citizen born in Zaire. He was sentenced to 34 years of hard labor.

  • May 1992 - Virginia Jean Baynes was convicted of passing Secret
    Classified information
    Classified information is sensitive information to which access is restricted by law or regulation to particular groups of persons. A formal security clearance is required to handle classified documents or access classified data. The clearance process requires a satisfactory background investigation...

     documents to the Philippines
    Philippines
    The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...

     via Joseph Garfield Brown while she was a Secretary with the Central Intelligence Agency
    Central Intelligence Agency
    The Central Intelligence Agency is a civilian intelligence agency of the United States government. It is an executive agency and reports directly to the Director of National Intelligence, responsible for providing national security intelligence assessment to senior United States policymakers...

     in Manila
    Manila
    Manila is the capital of the Philippines. It is one of the sixteen cities forming Metro Manila.Manila is located on the eastern shores of Manila Bay and is bordered by Navotas and Caloocan to the north, Quezon City to the northeast, San Juan and Mandaluyong to the east, Makati on the southeast,...

    .

  • February 1993 - Frederick Christopher Hamilton plead guilty to passing Secret
    Classified information
    Classified information is sensitive information to which access is restricted by law or regulation to particular groups of persons. A formal security clearance is required to handle classified documents or access classified data. The clearance process requires a satisfactory background investigation...

     intelligence reports regarding Peru
    Peru
    Peru , officially the Republic of Peru , is a country in western South America. It is bordered on the north by Ecuador and Colombia, on the east by Brazil, on the southeast by Bolivia, on the south by Chile, and on the west by the Pacific Ocean....

     to Ecuador
    Ecuador
    Ecuador , officially the Republic of Ecuador is a representative democratic republic in South America, bordered by Colombia on the north, Peru on the east and south, and by the Pacific Ocean to the west. It is one of only two countries in South America, along with Chile, that do not have a border...

     in 1991 while stationed in Peru
    Peru
    Peru , officially the Republic of Peru , is a country in western South America. It is bordered on the north by Ecuador and Colombia, on the east by Brazil, on the southeast by Bolivia, on the south by Chile, and on the west by the Pacific Ocean....

     with the Defense Intelligence Agency
    Defense Intelligence Agency
    The Defense Intelligence Agency is a member of the Intelligence Community of the United States, and is the central producer and manager of military intelligence for the United States Department of Defense, employing over 16,500 U.S. military and civilian employees worldwide...

    . He pled guilty to two counts of unlawfully communicating classified information to a foreign country and was sentenced to 37 months in prison.

  • August 1993 - Geneva Jones was indicted for theft of government property and transmission of defense information to unauthorized persons. While a secretary in with the State Department, she passed classified documents to a West African journalist friend Dominic Ntube, who then passed some of them to Liberian
    Liberia
    Liberia , officially the Republic of Liberia, is a country in West Africa. It is bordered by Sierra Leone on the west, Guinea on the north and Côte d'Ivoire on the east. Liberia's coastline is composed of mostly mangrove forests while the more sparsely populated inland consists of forests that open...

     rebels. In 1994, she plead guilty to 21 counts of theft and 2 counts of unlawful communication of national defense information. She was sentenced to 37 months in prison.

  • May 1993 - Steven John Lalas
    Steven John Lalas
    Steven John Lalas is a Greek American and a former State Department communications officer. Charged with espionage-related offenses in connection with passing sensitive military and diplomatic information to Greek officials, he was arrested in northern Virginia in 1993.Lalas pled guilty in...

     was charged with passing sensitive military information to Greece
    Greece
    Greece , officially the Hellenic Republic , and historically Hellas or the Republic of Greece in English, is a country in southeastern Europe....

     between 1991 and 1993 while working for the State Department. He passed hundreds of highly classified
    Classified information
    Classified information is sensitive information to which access is restricted by law or regulation to particular groups of persons. A formal security clearance is required to handle classified documents or access classified data. The clearance process requires a satisfactory background investigation...

     documents between 1991 and 1993. He was of Greek descent, but was born in the United States
    United States
    The United States of America is a federal constitutional republic comprising fifty states and a federal district...

    . In June, he pleaded guilty to conspiracy to commit espionage and was sentenced to 14 years in prison.

  • February 1994 - Aldrich Hazen Ames was charged with providing highly classified information
    Classified information
    Classified information is sensitive information to which access is restricted by law or regulation to particular groups of persons. A formal security clearance is required to handle classified documents or access classified data. The clearance process requires a satisfactory background investigation...

     since 1985 to the Soviet Union
    Soviet Union
    The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....

     and then Russia
    Russia
    Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

    . The information he passed led to the execution of at least 9 United States agents in Russia. In April, he and his wife both pleaded guilty to conspiring to commit espionage and to tax evasion. He was sentenced to life in prison without parole on the espionage charges, and 63 months in prison on the tax evasion charges.

  • May 1995 - John Douglas Charlton was arrested and indicted for 10 counts of attempting to sell Secret
    Classified information
    Classified information is sensitive information to which access is restricted by law or regulation to particular groups of persons. A formal security clearance is required to handle classified documents or access classified data. The clearance process requires a satisfactory background investigation...

     United States Navy
    United States Navy
    The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

     documents in 1993. He took the document from Lockheed Corporation
    Lockheed Corporation
    The Lockheed Corporation was an American aerospace company. Lockheed was founded in 1912 and later merged with Martin Marietta to form Lockheed Martin in 1995.-Origins:...

     before his retirement in 1989. In 1996, he pleaded guilty to 2 counts of attempted transfer of defense information. He was sentenced to two years in prison without parole followed by 5 years of probation.

  • May 1995 - Michael Stephen Schwartz was charged with 4 counts of espionage and 5 counts of taking classified material to his residence. He passed Secret
    Classified information
    Classified information is sensitive information to which access is restricted by law or regulation to particular groups of persons. A formal security clearance is required to handle classified documents or access classified data. The clearance process requires a satisfactory background investigation...

     NOFORN classified material to Saudi Arabia
    Saudi Arabia
    The Kingdom of Saudi Arabia , commonly known in British English as Saudi Arabia and in Arabic as as-Sa‘ūdiyyah , is the largest state in Western Asia by land area, constituting the bulk of the Arabian Peninsula, and the second-largest in the Arab World...

     between 1992 and 1994, while stationed in Riyadh
    Riyadh
    Riyadh is the capital and largest city of Saudi Arabia. It is also the capital of Riyadh Province, and belongs to the historical regions of Najd and Al-Yamama. It is situated in the center of the Arabian Peninsula on a large plateau, and is home to 5,254,560 people, and the urban center of a...

     with the United States Navy
    United States Navy
    The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

    . In October, he agreed to a plea bargain that gave him an other than honorable discharge.

  • February 1996 - Robert Lipka
    Robert Lipka
    Robert Lipka is a former army clerk at the National Security Agency who, in 1997, pled guilty to conspiracy to commit espionage and was sentenced to 18 years in prison...

     (rus) was charged with committing espionage while working in the United States Military at the National Security Agency
    National Security Agency
    The National Security Agency/Central Security Service is a cryptologic intelligence agency of the United States Department of Defense responsible for the collection and analysis of foreign communications and foreign signals intelligence, as well as protecting U.S...

     from 1964 to 1967. He passed Top Secret
    Classified information
    Classified information is sensitive information to which access is restricted by law or regulation to particular groups of persons. A formal security clearance is required to handle classified documents or access classified data. The clearance process requires a satisfactory background investigation...

     information to the Soviet Union
    Soviet Union
    The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....

    . In 1997, he pleaded guilty to espionage and was sentenced to 18 years in prison.

  • April 1996 - Kurt G. Lessenthien, a petty officer in the United States Navy
    United States Navy
    The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

     was charged with attempted espionage for offering Top Secret
    Classified information
    Classified information is sensitive information to which access is restricted by law or regulation to particular groups of persons. A formal security clearance is required to handle classified documents or access classified data. The clearance process requires a satisfactory background investigation...

     submarine information to the Soviet Union
    Soviet Union
    The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....

    . As part of a plea agreement, he was sentenced to 27 years in military prison.

  • August 1996 - Phillip Tyler Seldon pleaded guilty to passing Secret
    Classified information
    Classified information is sensitive information to which access is restricted by law or regulation to particular groups of persons. A formal security clearance is required to handle classified documents or access classified data. The clearance process requires a satisfactory background investigation...

     documents to El Salvador
    El Salvador
    El Salvador or simply Salvador is the smallest and the most densely populated country in Central America. The country's capital city and largest city is San Salvador; Santa Ana and San Miguel are also important cultural and commercial centers in the country and in all of Central America...

     while a captain in the United States Army
    United States Army
    The United States Army is the main branch of the United States Armed Forces responsible for land-based military operations. It is the largest and oldest established branch of the U.S. military, and is one of seven U.S. uniformed services...

    . He was sentenced to two years in prison.

  • September 1996 - Robert Chaegun Kim, a civilian at the Office of Naval Intelligence
    Office of Naval Intelligence
    The Office of Naval Intelligence was established in the United States Navy in 1882. ONI was established to "seek out and report" on the advancements in other nations' navies. Its headquarters are at the National Maritime Intelligence Center in Suitland, Maryland...

     was charged with passing classified information
    Classified information
    Classified information is sensitive information to which access is restricted by law or regulation to particular groups of persons. A formal security clearance is required to handle classified documents or access classified data. The clearance process requires a satisfactory background investigation...

     to South Korea
    South Korea
    The Republic of Korea , , is a sovereign state in East Asia, located on the southern portion of the Korean Peninsula. It is neighbored by the People's Republic of China to the west, Japan to the east, North Korea to the north, and the East China Sea and Republic of China to the south...

    , his country of birth. In 1997, he pleaded guilty to conspiracy to commit espionage and was sentenced to 9 years in prison.

  • November 1996 - Harold James Nicholson
    Harold James Nicholson
    For the English diplomat, author, diarist and politician, see Harold Nicolson.Harold James Nicholson is a former Central Intelligence Agency officer and a twice-convicted spy for Russia's Foreign Intelligence Service...

     was arrested while attempting to take Top Secret
    Classified information
    Classified information is sensitive information to which access is restricted by law or regulation to particular groups of persons. A formal security clearance is required to handle classified documents or access classified data. The clearance process requires a satisfactory background investigation...

     documents out of the country. He began spying for Russia
    Russia
    Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

     in 1994. He was a senior-ranking Central Intelligence Agency
    Central Intelligence Agency
    The Central Intelligence Agency is a civilian intelligence agency of the United States government. It is an executive agency and reports directly to the Director of National Intelligence, responsible for providing national security intelligence assessment to senior United States policymakers...

     officer. In 1997, he pleaded guilty and was sentenced to more than 23 years in prison.

  • December 1996 - Earl Edwin Pitts
    Earl Edwin Pitts
    Earl Edwin Pitts is a former FBI special agent who, in 1996, was arrested at the FBI Academy in Quantico, Virginia. Pitts was charged with several offenses, including spying for the Soviet Union and Russia...

     was charged with providing Top Secret
    Classified information
    Classified information is sensitive information to which access is restricted by law or regulation to particular groups of persons. A formal security clearance is required to handle classified documents or access classified data. The clearance process requires a satisfactory background investigation...

     documents to the Soviet Union
    Soviet Union
    The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....

     and then Russia
    Russia
    Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

     from 1987 until 1992. In 1997, he pleaded guilty to two counts of espionage and was sentenced to 27 years in prison.

  • December 1996 - Several days after John M. Deutch
    John M. Deutch
    John Mark Deutch is an American chemist and civil servant. He was the United States Deputy Secretary of Defense from 1994 to 1995 and Director of Central Intelligence from May 10, 1995 until December 15, 1996...

     left the position of Director of Central Intelligence
    Director of Central Intelligence
    The Office of United States Director of Central Intelligence was the head of the United States Central Intelligence Agency, the principal intelligence advisor to the President and the National Security Council, and the coordinator of intelligence activities among and between the various United...

    , classified information was found on an unclassified computer at his home. Further investigation showed that he knowingly processed classified information regarding covert actions, Top Secret
    Top Secret
    Top Secret generally refers to the highest acknowledged level of classified information.Top Secret may also refer to:- Film and television :* Top Secret , a British comedy directed by Mario Zampi...

     Sensitive Compartmented Information
    Sensitive Compartmented Information
    Sensitive compartmented information is a type of United States classified information concerning or derived from sensitive intelligence sources, methods, or analytical processes. All SCI must be handled within formal access control systems established by the Director of National Intelligence...

     and the National Reconnaissance Program on unclassified computers connected to the Internet at his homes and office. In 1999, Attorney General
    Attorney General
    In most common law jurisdictions, the attorney general, or attorney-general, is the main legal advisor to the government, and in some jurisdictions he or she may also have executive responsibility for law enforcement or responsibility for public prosecutions.The term is used to refer to any person...

     Janet Reno
    Janet Reno
    Janet Wood Reno is a former Attorney General of the United States . She was nominated by President Bill Clinton on February 11, 1993, and confirmed on March 11...

     declined to prosecute him.

  • December 1997 - Peter H. Lee turned himself in and pleaded guilty to a felony count of passing national defense information for sharing classified information
    Classified information
    Classified information is sensitive information to which access is restricted by law or regulation to particular groups of persons. A formal security clearance is required to handle classified documents or access classified data. The clearance process requires a satisfactory background investigation...

     on hohlraums on a visit to the People's Republic of China
    People's Republic of China
    China , officially the People's Republic of China , is the most populous country in the world, with over 1.3 billion citizens. Located in East Asia, the country covers approximately 9.6 million square kilometres...

     while working for Los Alamos National Laboratory
    Los Alamos National Laboratory
    Los Alamos National Laboratory is a United States Department of Energy national laboratory, managed and operated by Los Alamos National Security , located in Los Alamos, New Mexico...

    .

  • April 1998 - FBI arrested ex-CIA employee Douglas Frederick Groat on charges of espionage. After being fired from the Central Intelligence Agency
    Central Intelligence Agency
    The Central Intelligence Agency is a civilian intelligence agency of the United States government. It is an executive agency and reports directly to the Director of National Intelligence, responsible for providing national security intelligence assessment to senior United States policymakers...

    , he allegedly gave classified information
    Classified information
    Classified information is sensitive information to which access is restricted by law or regulation to particular groups of persons. A formal security clearance is required to handle classified documents or access classified data. The clearance process requires a satisfactory background investigation...

     to foreign governments. He pled guilty to attempted extortion
    Extortion
    Extortion is a criminal offence which occurs when a person unlawfully obtains either money, property or services from a person, entity, or institution, through coercion. Refraining from doing harm is sometimes euphemistically called protection. Extortion is commonly practiced by organized crime...

    .

  • October 1998 - David Sheldon Boone
    David Sheldon Boone
    David Sheldon Boone is a former U.S. Army signals analyst who worked for the National Security Agency and was convicted of espionage-related charges in 1999 related to his sale of secret documents to the Soviet Union from 1988 to 1991. He is currently serving a prison sentence of 24 years and four...

     was charged with selling Top Secret
    Classified information
    Classified information is sensitive information to which access is restricted by law or regulation to particular groups of persons. A formal security clearance is required to handle classified documents or access classified data. The clearance process requires a satisfactory background investigation...

     documents to the Soviet Union
    Soviet Union
    The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....

     from 1988 to 1991, which he had access to, as a member of the United States Army
    United States Army
    The United States Army is the main branch of the United States Armed Forces responsible for land-based military operations. It is the largest and oldest established branch of the U.S. military, and is one of seven U.S. uniformed services...

     working for the National Security Agency
    National Security Agency
    The National Security Agency/Central Security Service is a cryptologic intelligence agency of the United States Department of Defense responsible for the collection and analysis of foreign communications and foreign signals intelligence, as well as protecting U.S...

     in Germany. He later pleaded guilty to conspiracy to commit espionage.

  • December 1999 - Wen Ho Lee
    Wen Ho Lee
    Dr. Wen Ho Lee is a Taiwan-born Taiwanese American scientist who worked for the University of California at the Los Alamos National Laboratory. He created simulations of nuclear explosions for the purposes of scientific inquiry, as well as for improving the safety and reliability of the US nuclear...

     is accused of espionage at Los Alamos National Laboratory
    Los Alamos National Laboratory
    Los Alamos National Laboratory is a United States Department of Energy national laboratory, managed and operated by Los Alamos National Security , located in Los Alamos, New Mexico...

    . He later pleaded guilty to improper handling of Secret Restricted Data and was sentenced to time served.

2000s

  • February 2000 - Mariano Faget, a naturalized citizen working for the Immigration and Naturalization Service
    Immigration and Naturalization Service
    The United States Immigration and Naturalization Service , now referred to as Legacy INS, ceased to exist under that name on March 1, 2003, when most of its functions were transferred from the Department of Justice to three new components within the newly created Department of Homeland Security, as...

     was arrested for passing classified information
    Classified information
    Classified information is sensitive information to which access is restricted by law or regulation to particular groups of persons. A formal security clearance is required to handle classified documents or access classified data. The clearance process requires a satisfactory background investigation...

     to Cuba
    Cuba
    The Republic of Cuba is an island nation in the Caribbean. The nation of Cuba consists of the main island of Cuba, the Isla de la Juventud, and several archipelagos. Havana is the largest city in Cuba and the country's capital. Santiago de Cuba is the second largest city...

    . He was sentenced in 2001 to 5 years in prison for disclosing classified information and other related charges.

  • April 2000 - Timothy Steven Smith was charged with espionage after being caught stealing disks and five Confidential
    Classified information
    Classified information is sensitive information to which access is restricted by law or regulation to particular groups of persons. A formal security clearance is required to handle classified documents or access classified data. The clearance process requires a satisfactory background investigation...

     documents from a ship in the Pacific Fleet
    Pacific Fleet
    A number of countries currently have or previously had an Pacific Fleet in their navies.*United States Pacific Fleet*Pacific Fleet *Pacific Naval Force *British Pacific Fleet...

    . He pled guilty to stealing government property and assaulting an officer and was convicted to 260 days in prison, including time served.

  • June 2000 - George Trofimoff
    George Trofimoff
    George Trofimoff was the highest ranking US military officer ever charged with, and convicted of, espionage by the United States. He was sentenced to life imprisonment on September 27, 2001.- Background :...

    , a naturalized citizen of Russian parents, was arrested for spying for the Soviet Union
    Soviet Union
    The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....

     and Russia
    Russia
    Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

     since about 1969. Having retired as a colonel in the United States Army Reserve
    United States Army Reserve
    The United States Army Reserve is the federal reserve force of the United States Army. Together, the Army Reserve and the Army National Guard constitute the reserve components of the United States Army....

    , he was the highest ranking military officer ever accused of spying. He was convicted and sentenced to life imprisonment.

  • February 2001 - Robert Philip Hanssen was arrested for spying for the Soviet Union
    Soviet Union
    The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....

     and Russia
    Russia
    Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

     for most of his 27 years with the Federal Bureau of Investigation
    Federal Bureau of Investigation
    The Federal Bureau of Investigation is an agency of the United States Department of Justice that serves as both a federal criminal investigative body and an internal intelligence agency . The FBI has investigative jurisdiction over violations of more than 200 categories of federal crime...

    . He passed thousands of pages of classified documents on nuclear war defenses and Sensitive Compartmented Information
    Sensitive Compartmented Information
    Sensitive compartmented information is a type of United States classified information concerning or derived from sensitive intelligence sources, methods, or analytical processes. All SCI must be handled within formal access control systems established by the Director of National Intelligence...

     and exposed three Russian agents of the United States, two of whom were tried and executed. He pleaded guilty to espionage and was sentenced to life in prison.

  • August 2001 - Brian Patrick Regan
    Brian Patrick Regan
    Brian Patrick Regan is a former master sergeant in the United States Air Force who was convicted of offering to sell secret information to foreign governments....

    , a contractor for TRW
    TRW
    TRW Inc. was an American corporation involved in a variety of businesses, mainly aerospace, automotive, and credit reporting. It was a pioneer in multiple fields including electronic components, integrated circuits, computers, software and systems engineering. TRW built many spacecraft,...

     working at the National Reconnaissance Office
    National Reconnaissance Office
    The National Reconnaissance Office , located in Chantilly, Virginia, is one of the 16 U.S. intelligence agencies. It designs, builds, and operates the spy satellites of the United States government.-Mission:...

     was arrested for attempting to sell Top Secret
    Classified information
    Classified information is sensitive information to which access is restricted by law or regulation to particular groups of persons. A formal security clearance is required to handle classified documents or access classified data. The clearance process requires a satisfactory background investigation...

     Sensitive Compartmented Information
    Sensitive Compartmented Information
    Sensitive compartmented information is a type of United States classified information concerning or derived from sensitive intelligence sources, methods, or analytical processes. All SCI must be handled within formal access control systems established by the Director of National Intelligence...

     to foreign governments. He was convicted of attempting to sell classified information
    Classified information
    Classified information is sensitive information to which access is restricted by law or regulation to particular groups of persons. A formal security clearance is required to handle classified documents or access classified data. The clearance process requires a satisfactory background investigation...

     to Iraq
    Iraq
    Iraq ; officially the Republic of Iraq is a country in Western Asia spanning most of the northwestern end of the Zagros mountain range, the eastern part of the Syrian Desert and the northern part of the Arabian Desert....

     and China
    China
    Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

     and was sentenced to life in prison without parole.

  • September 2001 - Ana Belen Montes, a senior intelligence analyst with the Defense Intelligence Agency
    Defense Intelligence Agency
    The Defense Intelligence Agency is a member of the Intelligence Community of the United States, and is the central producer and manager of military intelligence for the United States Department of Defense, employing over 16,500 U.S. military and civilian employees worldwide...

     passed classified military and intelligence information to Cuba
    Cuba
    The Republic of Cuba is an island nation in the Caribbean. The nation of Cuba consists of the main island of Cuba, the Isla de la Juventud, and several archipelagos. Havana is the largest city in Cuba and the country's capital. Santiago de Cuba is the second largest city...

     for at least 16 years. She pleaded guilty and was sentenced to 25 years in prison and 5 years of probation.

  • 2002 - The Department of Justice Inspector General reported that 212 functional weapons, 142 inoperable training weapons, and 317 laptop computers were lost, missing, or stolen during a 28-month review period.

  • March 2003 - 18 year-old Adil Yahya Zakaria Shakour breached network security at Sandia National Laboratories
    Sandia National Laboratories
    The Sandia National Laboratories, managed and operated by the Sandia Corporation , are two major United States Department of Energy research and development national laboratories....

     and defaced an Eglin Air Force Base
    Eglin Air Force Base
    Eglin Air Force Base is a United States Air Force base located approximately 3 miles southwest of Valparaiso, Florida in Okaloosa County....

     web site. Shakour is a Pakistani citizen living in the United States. He pleaded guilty to computer and credit card fraud charges.

  • April 2003 - A security officer at Lawrence Livermore National Laboratory
    Lawrence Livermore National Laboratory
    The Lawrence Livermore National Laboratory , just outside Livermore, California, is a Federally Funded Research and Development Center founded by the University of California in 1952...

     loses an electronic access badge. The loss is reported to an immediate supervisor, but senior Livermore managers are not notified until late May, at which point the badge was deactivated.

  • April 2003 - Security officers at Lawrence Livermore National Laboratory
    Lawrence Livermore National Laboratory
    The Lawrence Livermore National Laboratory , just outside Livermore, California, is a Federally Funded Research and Development Center founded by the University of California in 1952...

     discover that a set of keys to the gates of the laboratory are missing. Locks are changed.

  • February 2004 - Ryan Gilbert Anderson, a member of the Washington National Guard
    Washington National Guard
    The Washington National Guard is headquartered at Camp Murray, Washington and is defined by its state and federal mission. At the call of the Governor, the Washington National Guard will mobilize and deploy during times of state emergency to augment local jurisdictions and responders in their...

     was charged with 5 counts of attempting to provide aid and information to Al Qaeda. A court martial sentenced him to life in prison.

  • 16 July 2004 - Sandia National Laboratories
    Sandia National Laboratories
    The Sandia National Laboratories, managed and operated by the Sandia Corporation , are two major United States Department of Energy research and development national laboratories....

     announced that they had located a classified floppy disk that had been discovered missing on June 30 during a routine inventory. It was missing because it was improperly transferred to a different organization at the lab.

  • October 2006 - A drug-related investigation at a private residence found classified documents and a thumb drive containing classified information, all from Los Alamos National Laboratory, at the home of Jessica Quintana, a former subcontractor to the laboratory.

  • December 2006 - Petty Officer Ariel Weinmann
    Ariel Weinmann
    Petty Officer Ariel Weinmann, formerly a Fire Control Technician 3rd Class, now a Seaman Recruit with the United States Navy pled guilty on 4 December 2006 to espionage, desertion and other charges. His case is notable as an espionage case where the Navy and trial court officials have denied...

     of the United States Navy
    United States Navy
    The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

     pleaded guilty to espionage, desertion and other charges. His case is notable as an espionage
    Espionage
    Espionage or spying involves an individual obtaining information that is considered secret or confidential without the permission of the holder of the information. Espionage is inherently clandestine, lest the legitimate holder of the information change plans or take other countermeasures once it...

    case where the Navy and trial court officials have denied access to basic information, including the court docket.

  • February 2007 - The Department of Justice Inspector General reported that "over a 44-month period the FBI reported 160 weapons and 160 laptop computers as lost or stolen."
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