# Cryptography [The Art of Invisibility: The World's Most Famous Hacker Teaches You How to Be Safe in the Age of Big Brother and Big Data](https://www.goodreads.com/book/show/30363785-the-art-of-invisibility) #book - by Kevin Mitnick [The Code Book: The Science of Secrecy from Ancient Egypt to Quantum Cryptography](https://www.goodreads.com/book/show/17994.The_Code_Book) #book - by [Simon Singh](https://www.goodreads.com/author/show/10894.Simon_Singh) [The Codebreakers: The Comprehensive History of Secret Communication from Ancient Times to the Internet](https://www.goodreads.com/book/show/29608.The_Codebreakers) #book - by [David Kahn](https://www.goodreads.com/author/show/16679.David_Kahn) [Countdown to Zero Day: Stuxnet and the Launch of the World's First Digital Weapon](https://www.goodreads.com/book/show/18465875-countdown-to-zero-day) #book - by Kim Zetter [Cyberspies: The Secret History of Surveillance, Hacking, and Digital Espionage](https://www.goodreads.com/book/show/26876264-cyberspies) #book - by [Gordon Corera](https://www.goodreads.com/author/show/244787.Gordon_Corera) [Dark Territory: The Secret History of Cyber War](https://www.goodreads.com/book/show/25814289-dark-territory) #book - by Fred Kaplan --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://brain.nathanarthur.com/self-study/cyber-security.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.