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Concept
Countermeasure (computer)
Résumé
In computer security a countermeasure is an action, device, procedure, or technique that reduces a threat, a vulnerability, or an attack by eliminating or preventing it, by minimizing the harm it can cause, or by discovering and reporting it so that corrective action can be taken.
The definition is as IETF RFC 2828 that is the same as CNSS Instruction No. 4009 dated 26 April 2010 by Committee on National Security Systems of United States of America.
According to the Glossary by InfosecToday, the meaning of countermeasure is:
The deployment of a set of security services to protect against a security threat.
A synonym is security control.
In telecommunications, communication countermeasures are defined as security services as part of OSI Reference model by ITU-T X.800 Recommendation.
X.800 and ISO ISO 7498-2 (Information processing systems – Open systems interconnection – Basic Reference Model – Part 2: Security architecture are technically aligned.
The following picture explain the relationships between these concepts and terms:
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- -+ | An Attack: | |Counter- | | A System Resource: | | i.e., A Threat Action | | measure | | Target of the Attack | | +----------+ | | | | +-----------------+ | | | Attacker |
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Source officielle
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