"Susan Landau is eminently qualified to guide readers to deeper understanding of risks and threats that accompany an increasingly connected world. Our online appetites are growing and our presence attracts hacking and surveillance among other uses we may not have authorized or even anticipated. Must read."—Vint Cerf, internet pioneer

"Susan Landau manages to harness the sprint of our online era and provides a lasting framework for how to manage, protect, and even master our digital footprint."—Juliette Kayyem, former Assistant Secretary, United States Department of Homeland Security

"Encryption is essential to our online security, but it also makes the job of law enforcement harder.  In Listening In, Landau gives us an authoritative and unflinching look at this challenge and confronts the urgent question of security in the digital age."—Matt Olsen, Former Director, National Counterterrorism Center

"Susan Landau has performed a remarkable feat of public service with Listening In: she simplifies the complex contemporary debate around privacy and security trade-offs in a way that welcomes anyone with an interest in these topics to engage with them -- and she demonstrates why everyone should."—Jonathan Zittrain, author of The Future of the Internet – and How to Stop It

“An extremely important book. Landau has the remarkable talent of taking very broad issues and detailing them in a concise, yet comprehensive manner.”—Ben Rothke, author of Computer Security, on Landau's previous book Surveillance or Security?