Saturday, October 11, 2025

The woman who smashed codes by Jason Fagone (2017)

I picked up The Woman Who Smashed Codes on the recommendation of colleagues who thought it might appeal to me because of its loose connection to cybersecurity. They were right. The book tells the story of Elizebeth Smith Friedman, a pioneering American cryptanalyst whose work laid much of the groundwork for modern codebreaking and national intelligence.

Fagone's writing is vivid and accessible. He brings the early 20th century to life through rich scenes and authentic dialogue that reflect the social norms, speech patterns, and intellectual energy of the time. What I particularly enjoyed was how the book captures that era's mindset—its optimism, its limits, and the quiet revolutions happening in scientific thought long before most people realized it.

The book does not shy away from the entrenched sexism Elizebeth and her peers faced, yet it handles those issues with balance. Fagone's tone is indignant where necessary but never heavy-handed. The result is both a tribute and a well-researched historical narrative.

Elizebeth's story also intersects with the birth of information theory and the cryptographic advances that would eventually culminate in Claude Shannon's 1939 work. Reading about her pre-Shannon efforts underscores how revolutionary those later ideas were, and how much of modern computing owes to the hidden labor of people like her.

For readers unfamiliar with cryptography, the book explains enough to make the puzzles and breakthroughs intelligible without drowning in mathematics. For readers who already know the field's history, Fagone's attention to archival detail and his portrayal of Elizebeth's marriage to fellow codebreaker William Friedman add valuable depth.

As a PhD in computer science and an avid reader of historical narratives grounded in real scientific and social change, I found this book deeply satisfying—both as history and as storytelling. It's an absorbing portrait of an overlooked figure whose intellect shaped the course of modern intelligence work.  5/5 Stars.


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