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| Multi-party authorization ： ウィキペディア英語版 |
Multi-party authorization
Multi-party authorization (MPA) is a process to protect a telecommunications network, data center or industrial control system from undesirable acts by a malicious insider or inexperienced technician acting alone. MPA requires that a second authorized user approve an action before it is allowed to take place. This pro-actively protects data or systems from an undesirable act.
==Architecture==
Existing methods to protect data and systems from the malicious insider include auditing, job rotation and separation of duties. Auditing is a reactive method meant to discover who did what after the fact. Job rotation and separation of duties are limiting techniques meant to minimize prolonged access to sensitive data or systems in order to limit undesirable acts. In contrast, MPA is a pro-active solution.
An advantage MPA has over other methods to protect from undesirable acts by a malicious insider or inexperienced operator is that MPA is pro-active and prevents data or systems from compromise by a single entity acting alone. MPA prevents the initial undesirable act rather than dealing with a breach or compromise after the fact.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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