Subject encyclopedias and handbooks have a wealth of background information that can provide you with a strong foundation upon which to build your research. To find a subject encyclopedia, try the search strategies shown in this tutorial. Use the same techniques to find handbooks - substitute "handbook" for "encyclopedia".
Computer and Information Security Handbook
Encyclopedia of Computer Science and Technology
Handbook of Digital Forensics and Investigation
Handbook of Practical Logic and Automated Reasoning
Encyclopedia of Cybercrime