Absolute beginner's guide to security, spam, spyware and viruses
Walker, Andy.
Indianapolis, Ind. : Que, 2005.

Combating spyware in the enterprise

Rockland, MA : Syngress, 2006.

Essential computer security : everyone's guide to e-mail, Internet, and wireless security
Bradley, Tony, 1969- author.
Rockland, MA : Syngress Publishing, [2006]

Pegasus : how a spy in your pocket threatens the end of privacy, dignity, and democracy
Richard, Laurent (Journalist), author.
New York : Henry Holt and Company, 2023.