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During the Cold War, intelligence agencies discovered that one of the most effective ways to undermine an enemy was to make its leaders question whether their own officers could be trusted. Through fabricated intelligence, false identities, and carefully planted suspicions, deception operations could send counterintelligence investigators searching for spies who might not even exist. One of the most extraordinary examples emerged from the Soviet KGB's hunt for an alleged American mole known as SASHA, a search that became entangled with real betrayals, questionable intelligence, and institutional paranoia. This episode of Spy Craft explores how the fear of an invisible traitor can become nearly as destructive as an actual spy.

Arminius served in the Roman military before organizing a rebellion against Roman control. His knowledge of Roman tactics and his access to Varus helped make a devastating ambush possible. Discover how misplaced trust and compromised intelligence contributed to one of Rome’s worst military defe

In 44 BCE, a group of Roman senators secretly organized the assassination of Julius Caesar, the most powerful man in the Republic. Their conspiracy required secrecy, coordination, and access to a heavily protected political leader. Although the plot succeeded, its participants failed to anticipate the political consequences. This episode examines the planning, deception, and intelligence failures surrounding one of history’s most consequential assassinations.

Could an intelligence agency secretly implant a tracking device inside an operative and monitor every movement? The reality of espionage involves serious technological limitations and the constant danger of electronic detection. We examine why a permanent tracking transmitter could become a spy’s greatest vulnerability.

Some spies steal secrets from embassies or recruit sources inside governments, but the most patient intelligence operations begin with something more ambitious: creating an entirely new human being. During the Cold War and beyond, Soviet and Russian intelligence services deployed “illegals,” deep-cover officers who lived abroad without the diplomatic protection normally associated with intelligence personnel. They adopted fabricated identities, built careers, formed relationships, raised families, and sometimes spent decades appearing to be ordinary members of Western society. Documented cases ranging from Rudolf Abel to the Russian network exposed in the United States in 2010 reveal how elaborate these operations could become. Their stories raise an unsettling question: how does someone live a false identity for so long that the cover story begins to resemble a real life?

What happens when the person recruiting you into espionage isn’t a mysterious intelligence officer, but your own father? John Walker built one of the most damaging Soviet spy networks in American history—and eventually brought his own son into the operation. The Walker family spy ring reveals how parental authority, loyalty, money, and gradual moral compromise can transform a family relationship into an intelligence operation.

In 1981, a KGB officer secretly handed French intelligence thousands of documents exposing one of the Soviet Union’s most important technology-theft programs. Instead of simply shutting the operation down, American intelligence reportedly developed a more ingenious response: let the Soviets keep stealing—but make sure some of what they stole was flawed. Operation Farewell became a remarkable Cold War story in which espionage was turned against the spies themselves.

In this episode, we separate the gripping fiction of The Americans from the gritty operational realities of the Cold War. While television depicts undercover Soviet operatives as lethal martial artists outsmarting federal agents at every turn, real espionage operated on a vastly different playbook. We explore the actual doctrine of the KGB’s Directorate S "Illegals" program, contrasting cinematic thrills with the patient, paranoid grind of deep-cover intelligence. Finally, we examine how the FBI’s real-world counterintelligence surveillance kept tabs on foreign networks operating right beneath the surface of American suburbia.

When former Russian security officer Alexander Litvinenko fell mysteriously ill in London, doctors couldn't explain what was happening to him — until forensic testing revealed polonium-210, an almost unheard-of poison, inside his body. This episode traces how that discovery exposed a radiological trail across London and forced investigators to reconstruct a covert assassination method built specifically to evade detection. We look at the tradecraft behind the poisoning, why conventional toxicology initially failed to catch it, and what the case reveals about state-sponsored killing methods. It's a rare look at how espionage and forensic science collided in one of the most notorious poisonings in modern intelligence history.

Britain's NCSC, the FBI, and the Dutch AIVD have jointly warned about spyware they attribute to Iranian state-linked actors, including Iran's Ministry of Intelligence and Security. The malware is delivered through spear-phishing on WhatsApp and Telegram and can steal contacts, emails, messages, screenshots, and microphone audio. Some victim data later appeared on pro-Iranian leak sites. Officials said the tools are almost certainly used to repress dissidents, activists, and journalists.

On Sept. 14, 2026, German federal prosecutors charged a German-Ukrainian woman identified as Ilona W. with spying for Russia. She is accused of maintaining contacts since at least October 2023 with an intelligence officer at the Russian embassy in Berlin and gathering information on German defense policy and industry by befriending former defense ministry staff. Arrested in January 2026 and still in pre-trial detention, her case sits inside Berlin’s broader push against what it calls an escalating Russian hybrid threat.

A legend is not a costume. It is a second biography, assembled brick by brick so that a man may walk through another country’s streets and answer its questions without the tremor of invention. This piece examines how intelligence services construct those biographies—from birth certificates lifted from cemeteries to companies that file real taxes—and why the smallest inconsistency can still collapse years of work. In an age of facial recognition and searchable pasts, the craft has grown more laborious, not less.

In Sydney’s Downing Centre District Court, marketing executive Alexander Csergo has been sentenced to three and a half years in prison for reckless foreign interference. The case represents Australia’s first formal sentencing under the sweeping foreign interference legislation enacted in 2018. What began as innocuous professional inquiries on LinkedIn blossomed into clandestine meetings across Shanghai tea shops with handlers known simply as Ken and Evelyn. Csergo compiled open-source dossiers and pocketed cash in envelopes, eventually returning home with a target list aimed at Australia’s political and defense establishment, including details on the AUKUS security pact. His downfall illustrates the quiet, bureaucratic banality of modern tradecraft, where ordinary consultants are gradually drawn across the threshold into international espionage.

A mole does not confess. He blends, he performs loyalty better than the loyal, and he waits inside an institution built entirely on the assumption that everyone in the room can be trusted. This is the story of how counterintelligence learned to hunt for an absence rather than a presence, and why the hunt itself has ruined as many careers as it has saved.

In late August, U.S. Green Berets put Polish special forces through a first-of-its-kind NATO exercise: crossing a simulated front line, covering roughly sixty miles, and striking a target with a drone while more than a hundred enemy aircraft searched for them overhead. This episode examines why the exercise matters less for its use of drones and more for what it signals — NATO allies are now training as if constant aerial surveillance is a baseline threat, not an exception. It's a look at how tradecraft and evasion have to adapt when there's nowhere left to hide from the sky.