Conducting audits is the final step in the information security process.The audit portion of the security process has three functions: policy adherence, periodic and new projects assessments, and penetration tests.Policy adherence audits should not be confined to system configurations.Audits should be conducted once per year and should be conducted by the audit department or an external agency.Fill assessment should be conducted every one to two years.Penetration test are appropriate to test intrusion detection systems and incident response procedures. The information gained from these tests helps the administrator assess the appropriateness of the physical security and potential vulnerabilities in the way information is provided to the tester.When penetration testing is used, the organization should define the scope of the test, when the test will be conducted, and the aspects of security to be tested.
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