Need a discussion post of 300-500 words in APA format with 4 references and 4 citations

 An important principle in information security is the concept of layers of security, which is often referred to as layered security, or defense in depth.
1) Please explain the concept of layers of security. 2) Please provide at least 2 examples of layers of security.  3) Please describe the layers of security you list and be sure to include why it is an example of a layer of security.