These are some books that I have read and highly recommend.

CEH Certified Ethical Hacker All-in-One

*Note: I haven’t passed the test so this is a premature recommendation.  I like the way it is written, so far so good.  I’ll update at the end of 2017 when I take the exam*

 CASP Cert Guide


Future Crimes: Everything Is Connected, Everyone Is Vulnerable and What We Can Do About It


Group Policy: Fundamentals, Security, and the Managed Desktop

Time Management for System Administrators

Countdown to Zero Day: Stuxnet and the Launch of the World’s First Digital Weapon