Counter-Intelligence

Spies have always existed. So have those hunting them.

Counter-Intelligence charts this secret history from its origins in ancient Egypt, Greece, and Rome through to the algorithm-driven intelligence agencies of today. Drawing on declassified records, historical case studies, and operational analysis, Gregory Donaghy examines the pivotal moments that defined modern intelligence practice - the codebreaking breakthroughs that turned the tide of World War II, the brutal mole hunts of the Cold War, and the double agents whose betrayals cost lives and reshaped history.

But the old tradecraft has a new battleground. Cyber espionage, artificial intelligence, quantum computing, and the rise of non-state actors have transformed intelligence into a multipolar, always-on contest with no clear front lines. The book confronts the ethical and legal tensions that come with it - and the vulnerabilities that no agency has yet solved.

Part history, part operational analysis, part warning - Counter-Intelligence is an essential guide to the enduring struggle between secrecy, deception, and national survival.

Companion PDF available @ https://books.intelligenceanalysis.org/counter-intelligence-companion/