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European Definitions

Other International Definitions


(Cyber) attack are the activities undertaken to bypass or exploit deficiencies in a system's security mechanisms. [1]

By a direct attack on a system they exploit deficiencies in the underlying algorithms, principles, or properties of a security mechanism. Indirect attacks are performed

when they bypass the mechanism, or when they make the system use the mechanism incorrectly.

Attaque: Activités entreprises pour contourner ou exploiter des déficiences constatées dans les mécanismes de sécurité d'un système. [2]

Ataque: Actividades realizadas para obviar los mecanismos de seguridad de un sistema o aprovechar sus deficiencias. [3]

攻击: 为绕过一个系统的安全机制或利用其漏洞而采取的行动. [4]

National Definitions

Czech Republic

Útok: Pokus o zničení, vystavení hrozbě, nežádoucí změnu, vyřazení z činnosti, zcizení nebo získání neautorizovaného přístupu k aktivu nebo uskutečnění neautorizovaného použití aktiva. [5]

Attack is an attempt at destruction, exposure to a threat, unwanted change, putting out of operation, stealing or obtaining an unauthorized access to an asset or execution of an unauthorized use of an asset. [6]



(Cyber) attack is an assault on system security that derives from an intelligent threat, i.e., an intelligent act that is a deliberate attempt (especially in the sense of a method or technique) to evade security services and violate the security policy of a system. [7]

Standard Definition

Discussion Topic

See also

Attack tree


  1. ITU Security in Telecommunications and Information Technology: An overview of issues and the deployment of existing ITU-T Recommendations for secure telecommunications, ITU-T, Geneva (2012) - ITU-T H.235.
  2. Sécurité dans les télécommunications et les technologies de l’information: Aperçu des problèmes et présentation des Recommandations UIT-T existantes sur la sécurité dans les télécommunications, ITU-T, Geneva (2012) - ITU-T H.235.
  3. Seguridad de las telecomunicaciones y las tecnologías de la información: Exposición general de asuntos relacionados con la seguridad de las telecomunicaciones y la aplicación de las Recomendaciones vigentes del UIT-T, ITU-T, Geneva (2012) - ITU-T H.235.
  4. 关于电信安全的若干议题综述 及相关ITU-T建议书应用简介, ITU-T, Geneva (2012) - ITU-T H.235.
  5. Výkladový slovník kybernetické bezpečnosti (2013)
  6. Výkladový slovník kybernetické bezpečnosti (2013)
  7. RFC2828 (Japanese translation)