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回文時間：2011-03-25 01:19:57
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Information security management system
An information security management system (ISMS) is a set of policies concerned with information security management. The idioms arose primarily out of ISO 27001.
The governing principle behind an ISMS is that an organization should design, implement and maintain a coherent set of policies, processes and systems to manage risks to its information assets, thus ensuring acceptable levels of information security risk.
As with all management processes, an ISMS must remain effective and efficient in the long term, adapting to changes in the internal organization and external environment. ISO/IEC 27001 therefore incorporates the typical "Plan-Do-Check-Act" (PDCA), or Deming cycle, approach:
The Plan phase is about designing the ISMS, assessing information security risks and selecting appropriate controls.
The Do phase involves implementing and operating the controls.
The Check phase objective is to review and evaluate the performance (efficiency and effectiveness) of the ISMS.
In the Act phase, changes are made where necessary to bring the ISMS back to peak performance.
The best known ISMS is described in ISO/IEC 27001 and ISO/IEC 27002 and related standards published jointly by ISO and IEC.
Another competing ISMS is Information Security Forum's Standard of Good Practice (SOGP). It is more best practice-based as it comes from ISF's industry experiences.
Other frameworks such as COBIT and ITIL touch on security issues, but are mainly geared toward creating a governance framework for information and IT more generally.
Information Security Management Maturity Model (known as ISM-cubed or ISM3) is another form of ISMS. ISM3 builds on standards such as ISO 20000, ISO 9001, CMM, ISO/IEC 27001, and general information governance and security concepts. ISM3 can be used as a template for an ISO9001-compliant ISMS. While ISO/IEC 27001 is controls based, ISM3 is process based and includes process metrics. A Capability Maturity Model for system security was standardized in ISO/IEC_21827.
資料來源：
http://en.wikipedia.org/wiki/Information_security_management_system
From Wikipedia |
