Section 1: Securing Our Data

In this section, we'll take a look at the current threat landscape so that you can better understand the reasons why we need to secure our data. First we'll outline how encryption can protect the data, whether in motion or at rest, by providing security services, such as confidentiality, integrity, and authentication. We'll then take a brief look at the evolution of ciphers over time, along with the development of Lucifer and Feistel ciphers, as scientists recognized the need to secure digital data. Finally, we'll compare some of the various network attacks that can alter the integrity of our data.

This section comprises the following chapters:

• Chapter 1, Protecting Data in Motion or at Rest
• Chapter 2, The Evolution of Ciphers
• Chapter 3, Evaluating Network Attacks