# Gray Day

Canonical: https://www.bookquiver.com/eric-oneill/gray-day/9780525573531

![Gray Day](https://quivercdn.com/covers/crown/eric-oneill/gray-day_978-05-2557-353-1.jpg?v=2026-06-06%2011%3A23%3A41)

- Book: [Gray Day](https://www.bookquiver.com/eric-oneill/gray-day) ([Gray Day.md](https://www.bookquiver.com/eric-oneill/gray-day.md))
- Authors: [Eric O’Neill](https://www.bookquiver.com/eric-oneill)
- Publisher: crown
- ISBN: 978-05-2557-353-1
- Pages: 304
- Published: 2020-03-24
- Language: en_US
- Binding: Softcover

## Description

A cybersecurity expert and former FBI “ghost” tells the thrilling story of how he helped take down notorious FBI mole Robert Hanssen, the first Russian cyber spy. “Both a real-life,...