- In business, a security policy is a document that states in writing how a company plans to protect the company's physical and
information technology (IT) assets. A security policy is often considered to be a "living document", meaning that the document
is never finished, but is continuously updated as technology and employee requirements change. A company's security
policy may include an acceptable use policy, a description of how the company plans to educate its employees about
protecting the company's assets, an explanation of how security measurements will be carried out and enforced, and a
procedure for evaluating the effectiveness of the security policy to ensure that necessary corrections will be made.
defense in depth(SearchSecurity.com) Defense in depth is the coordinated use of multiple security countermeasures to protect the integrity of the information assets in an enterprise......
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