Security

Akkerman and Langman reconstruct the tools of early modern intelligence - ciphers, inks, seals, locks, poisons - and show that the cycle of measure and countermeasure was already fully formed.

Chris Voss teaches technique; Mickey Bergman does the job. His account of unofficial hostage diplomacy is really a manual on building a channel neither side can acknowledge.

A documentary history of the NSA built from declassified paper. Aid's real subject is the gap between what an organization collects and what it actually understands.

A vice president's unapologetic account of four decades in power, read not as settled history but as one participant's contested testimony about deciding under extreme uncertainty.

A son's account of his mother's murder, and a careful anatomy of how corruption captured the institutions of an EU member state in plain sight over a decade.

Ric Prado ended as chief of operations of the CIA's Counterterrorist Center. Strip out the biography and what remains is method: how trust is tested, and how operations are built to survive failure.

Germany's former intelligence chief was stopped from publishing his memoir. The polemic he published instead argues that accumulated regulation turned the BND into an administrative authority.

A former Director of GCHQ sets out the four-part method analysts use under uncertainty: situational awareness, explanation, estimation, strategic notice. Our review of why due diligence needs all four.

Sacked and broke in the Depression, Herbert Yardley published what American codebreakers had been reading. Some of it came from records he had kept when the bureau closed.

Gavin de Becker spent a career predicting violence. His argument: the unease you cannot yet explain is data. Our review: pre-incident indicators, manufactured trust, and what they mean for diligence.

In the 1950s the CIA hired a stage magician to write a manual on deception. Melton and Wallace reproduce it — and its lesson on attention is the mechanism behind pretexting.

Jenny Radcliffe is hired to break into her clients' buildings, and she rarely touches a lock. People Hacker shows why the human layer is the one nobody tests.