"In this real-life espionage thriller, cyber security expert Ronald Deibert uncovers the unseemly marketplace for high-tech surveillance, professional disinformation, and computerized malfeasance and reveals how his team of digital sleuths at the Citizen Lab have lifted the lid on dozens of spy cases targeting innocent citizens around the world. He recounts how the Lab exposed the world's pre-eminent cyber-mercenary firm, Israel-based NSO Group -- the creators of the phone-hacking marvel Pegasus -- in a series of human rights abuses, from domestic spying scandals in Spain, Poland, Hungary, and Greece to its implication in the murder of Washington Post journalist Jamal Khashoggi in 2018. Today, NSO Group, once valued at over a billion dollars, faces plummeting worth and an irretrievably tarnished reputation. Chasing Shadows provides a front-row seat to a dark underworld of digital espionage, sabotage, and subversion where autocrats and dictators peer into their targets' lives with the mere press of a button, spreading their tentacles of authoritarianism through a digital ecosystem that is insecure, invasive by design, poorly regulated, and prone to abuse. The brave activists, opposition figures, and journalists who dare to advocate for basic political rights and freedoms are hounded, arrested, tortured, and sometimes murdered. From the gritty streets of Guatemala City to the corridors of power in the White House, this compelling narrative traces the journey of the Citizen Lab, a pioneering digital watchdog, as it evolved into a globally renowned source of counter-intelligence for civil society and whose exploits are routinely covered in the world's media. But as this small team of sleuths disarmed cyber mercenaries and helped to improve the digital security of billions of people worldwide, their success came with a price. The Citizen Lab's dogged investigations ultimately brought them, too, into the same sinister crosshairs that plagued the victims they worked to protect. Like a John Le Carré novel brought to life and updated for the digital age, this book is a powerful tale of high-stakes espionage, transnational intrigue, and the inevitable toll exacted when one dares to defy oligarchs and dictators. You'll never look at your smartphone the same way again"-- Provided by publisher.