10 Cold War Spies Who Feared Nothing

The Cold War was fought with armies, missiles, and political influence, but some of its most important battles took place in secret. Across Europe, North America, and the Soviet Bloc, intelligence agencies waged a shadow war that lasted for decades. Operatives infiltrated governments, military programs, and diplomatic circles, often working under constant threat of exposure.

For many spies, discovery meant more than embarrassment or imprisonment. Double agents and defectors frequently faced execution, while others risked losing their careers, families, and identities. Despite those dangers, some continued operating for years, driven by ideology, money, personal conviction, or a combination of all three. Whether serving East or West, these operatives accepted extraordinary risks in pursuit of information that could influence the balance of power between the world’s two superpowers.

Related: 10 Unsolved Mysteries from the Cold War

10 Raymond Mawby

Raymond Mawby was a British Member of Parliament who died in 1990, having earlier served as assistant paymaster general and junior minister. According to a BBC investigation, this was also the period when he worked as a spy for the Czechoslovakian security service for more than a decade, from 1960 to 1971.

Throughout his time as an operative, Mawby supplied sensitive political information to communist intelligence officers during Czechoslovakia’s communist era, including a hand-drawn floor plan of the prime minister’s Commons office, details about parliamentary committees, and a confidential parliamentary investigation into another Conservative Party politician.

Allegedly operating under the codename “Laval,” Mawby’s relationship with the Czech intelligence service began in 1960 when he was approached at a cocktail party and persuaded to provide political gossip in exchange for cash payments—exactly £100 for every exchange of information he provided. He continued assisting the foreign intelligence agency even after his promotion to junior minister in 1963. According to the report, the relationship ended in November 1971, though the revelations would not become public until decades later.^[1]

9 Michał Goleniewski

Michał Goleniewski was a high-ranking officer in Poland’s intelligence service. He was also a KGB operative, though he later became one of the West’s most valuable double agents during the Cold War.

After the Second World War, Goleniewski rose through the ranks of Polish intelligence and eventually worked closely with Soviet intelligence organizations. By the late 1950s, however, he had become deeply disillusioned with the communist system. In April 1958, he began secretly supplying information to the West and later defected to the United States.

For roughly 33 months, Goleniewski smuggled a vast amount of top-secret Soviet and Warsaw Pact military and espionage information to Western intelligence agencies. His disclosures exposed numerous communist agents and intelligence operations throughout Europe. They helped Western services identify significant security breaches within their own institutions. Few defectors provided such a large volume of high-value intelligence, making Goleniewski one of the Cold War’s most important double agents.^[2]

8 Otto von Bolschwing

Otto von Bolschwing was an early recruit to the Nazi Party who rose through the SS security apparatus and became closely associated with Adolf Eichmann. During the 1930s, he helped develop anti-Jewish policies and supported efforts to drive Jews from German-controlled territories while stripping them of their property and rights.

After the war, Bolschwing escaped to American-occupied Austria and worked with exiled members of Romania’s Iron Guard before being recruited by the CIA under the codename “Agent Unrest.” His Nazi background was largely overlooked because of his perceived intelligence value against the Soviet Union.

Bolschwing later worked as a CIA asset with valuable connections in Austria and Eastern Europe, supporting broader U.S. intelligence efforts during the early years of the Cold War. His case remains one of the most controversial examples of former Nazi officials being used by Western intelligence agencies in the struggle against Soviet influence.^[3]

7 Gunvor Galtung Haavik

Gunvor Galtung Haavik was a Norwegian Foreign Ministry clerk and an agent of the Soviet Union for more than 27 years. Her espionage career began during the Second World War when she worked as a nurse and interpreter for Soviet prisoners held by the Nazis. During that period, she fell in love with a Russian prisoner of war.

When the soldier’s safety was threatened by the Nazis, Soviet intelligence reportedly promised protection in exchange for Haavik’s cooperation. By the time Norway joined NATO in 1949, she had already entered into a formal espionage relationship with Soviet intelligence that would continue for decades.

Over time, suspicions grew that Soviet diplomats were unusually well informed about Norway’s classified positions on major issues, particularly matters involving NATO and European cooperation. Haavik was eventually identified by Norwegian counterintelligence during a meeting with KGB operative A. K. Printsipalov, leading to her arrest in 1977. Although she confessed to espionage activities against Norway and other Western nations, Haavik died of heart failure before she could stand trial.^[4]

6 Oleg Vladimirovich Penkovsky

Often called one of the West’s most valuable double agents during the Cold War, Oleg Vladimirovich Penkovsky began his intelligence career in the Soviet Red Army in 1937 and later served as an artillery officer during the Second World War. By 1949, he had moved into the Soviet Army Intelligence Directorate (GRU), attended the Military Diplomatic Academy, and steadily climbed the ranks of Soviet military intelligence. By 1960, he had reached the rank of colonel.

By April 1961, however, Penkovsky had turned against the Soviet system, offering his services to British intelligence through businessman Greville M. Wynne. Over the next year and a half, he secretly provided British and American intelligence agencies with more than 5,000 photographs of classified military, political, and economic documents from the Soviet Union.

The information Penkovsky supplied provided critical insight into Soviet missile capabilities and helped Western leaders better understand Soviet military strengths and weaknesses during the Cuban Missile Crisis of 1962. His intelligence is widely regarded as some of the most valuable ever obtained from inside the Soviet system. Arrested in 1962 and executed the following year, Penkovsky paid the ultimate price for his espionage activities.^[5]

5 Elizabeth Bentley

Born in Connecticut, Elizabeth Bentley was highly educated, earning humanities degrees from Vassar College and Columbia University. In 1935, she joined the American League Against War and Fascism because of her exposure to fascism in Italy, followed by a relatively brief stint in the U.S. Communist Party.

Bentley’s espionage career began when she was recruited by coworker Juliet Stuart Poyntz at the Italian Information Library. Initially, she collected information on fascist activity before becoming involved with Soviet intelligence networks operating in the United States. Over time, she served primarily as a courier and handler, transmitting information between Soviet agents and their contacts.

When her spymaster, Jacob Golos, died in 1943, Bentley grew increasingly disillusioned with the Communist Party and Soviet intelligence. In 1945, she approached the FBI and began cooperating with U.S. authorities. Her extensive testimony exposed numerous Soviet espionage networks operating in America. It later contributed to investigations and prosecutions involving communist activities in the United States. By turning against the organization she had once served, Bentley placed herself at the center of one of the most controversial espionage scandals of the early Cold War.^[6]

4 Adolf Tolkachev

Adolf Tolkachev was a Soviet engineer who became one of the CIA’s most important assets during the Cold War. His work began in Moscow in 1978 and involved leaking top-secret information about Soviet radar technology, avionics, and cruise missiles. He soon became known as the “Billion Dollar Spy” for reportedly saving the United States an estimated $2 billion in weapons research and development costs.

Operating under the eyes of the KGB, Tolkachev met repeatedly with CIA officers on the streets of Moscow throughout his years as a CIA source. A major part of his work involved smuggling documents out of his military laboratory—usually concealed inside his overcoat—and photographing them in secret. According to declassified documents, Tolkachev was motivated to work against the Soviet Union because of his family’s suffering during Stalin’s Great Terror.

The intelligence he provided helped the United States better understand Soviet military technology and improve the effectiveness of American weapons systems. In 1985, Tolkachev was betrayed by former CIA officer Edward Lee Howard and arrested by the KGB. He was executed the following year, making him one of the highest-ranking Soviet sources ever lost by the CIA.^[7]

3 Hede Massing

Hede Massing was born in Vienna in 1900 to a Polish father and Austrian mother. She joined the Communist Party around 1920 and later married Gerhart Eisler, a prominent member of the German Communist Party. Between 1933 and 1937, Massing served as a Soviet espionage agent in the United States. In her later years, however, she turned against the Soviet Union—particularly Stalin’s communist movement—and became a staunch anti-communist.

After leaving Soviet intelligence circles, Massing became an important witness for U.S. investigators examining communist espionage activities. In 1949, she played a key role in the Alger Hiss case, testifying that Hiss had worked with Soviet intelligence against the interests of the United States.

Although her testimony contained inconsistencies and remains debated by some historians, it helped support the government’s case against Hiss. He was ultimately convicted of perjury in 1950 rather than espionage. Massing’s dramatic transformation from Soviet operative to anti-communist witness made her one of the more unusual intelligence figures of the early Cold War period.^[8]

2 Oleg Gordievsky

Oleg Gordievsky was one of the highest-ranking KGB officers ever to spy for the West. A committed Soviet intelligence officer during the early part of his career, Gordievsky gradually became disillusioned with the Soviet system following events such as the construction of the Berlin Wall and the suppression of reform movements in Eastern Europe. By the 1970s, he had secretly begun working for Britain’s MI6 while continuing to rise through the ranks of the KGB.

Operating from within Soviet intelligence, Gordievsky provided the West with invaluable information about KGB operations, Soviet leadership, and Moscow’s perceptions of NATO. Among his most important contributions was helping Western governments understand how seriously Soviet leaders feared a surprise nuclear attack during the 1983 Able Archer military exercise. Historians have since argued that his intelligence may have helped reduce tensions during one of the Cold War’s most dangerous periods.

In 1985, Soviet authorities recalled Gordievsky to Moscow after receiving information from a Western mole inside U.S. intelligence. Suspecting he was under investigation, Gordievsky managed to evade surveillance long enough to trigger an emergency extraction plan organized by MI6. Hidden inside a vehicle, he was smuggled across the Finnish border and out of the Soviet Union. Had he been captured, he almost certainly would have faced execution for treason. Instead, he became one of the Cold War’s most celebrated defectors and intelligence sources.^[9]

1 Aleksandr Dmitrievich Ogorodnik

Born in 1939, Aleksandr Dmitrievich Ogorodnik was a Soviet diplomat turned CIA spy at the height of the Cold War. Initially considered an unlikely candidate for Western espionage, Ogorodnik was eventually recruited by Colombian intelligence and the CIA, operating under the codename TRIGON, or Trianon.

Ogorodnik became a valuable spy because of his high-level access to secret diplomatic cables within the Soviet Foreign Ministry in Moscow, which he photographed and transmitted to the CIA. He even requested a suicide pill, known as an L-pill, as a contingency plan. While the exact reason he became a double agent remains unclear, it may have been linked to financial difficulties, personal motivations, or deep dissatisfaction with the Soviet bureaucratic system.

Ogorodnik’s career and life ended when he was apprehended by the KGB in Moscow. Rather than face interrogation and prosecution, he used the L-pill and took his own life. His death deprived both sides of the opportunity to fully understand the extent of his espionage activities, but his intelligence proved highly valuable to the CIA during a critical period of the Cold War. Few agents demonstrated a greater willingness to risk everything for their mission, making Ogorodnik one of the most remarkable spies of the era.^[10]