application security

Discuss the following, supplying citations to support any information that you provide.  Do not include your opinion, only what you can support with a citation.  Address the following topics.

1. Describe operating system hardening
   1. Define it
   2. Why is it done?
   3. What steps are usually done in a Windows environment?
2. Describe system restoration methods and procedures
   1. Define it
   2. Why is it needed?
   3. What tools and approaches are recommended?
3. Describe network security controls
   1. Define it
   2. Why is it needed?
   3. What steps, tools, and policies are used to secure networks?
4. Describe incident response teams and the role of evidence
   1. What are incident response teams and why do they exist?
   2. How does evidence collection relate to incident response teams?
   3. Discuss evidence
      1. Describe why evidence is collected,
      2. How it should be collected
      3. What can happen if it is collected or handled in an inappropriate way