Security Management in Detail

read this wikipedia article about security management:

Security management is the identification of an organization's assets (including information assets), followed by the development, documentation, and implementation of policies and procedures for protecting these assets.

An organisation uses such security management procedures as information classification, risk assessment, and risk analysis to identify threats, categorise assets, and rate system vulnerabilities so that they can implement effective controls.

to read the rest of this article:
http://en.wikipedia.org/wiki/Security_management