Definitions

security incident

(I) A security event that involves a security violation.

(C) In other words, a security-relevant system event in which the system’s security policy is disobeyed or otherwise breached.

(O) “Any adverse event which compromises some aspect of computer or network security.”

security event

(I) A occurrence in a system that is relevant to the security of the system.

security intrusion

(I) A security event, or a combination of multiple security events, that constitutes a security incident in which an intruder

gains, or attempts to gain, access to a system (or system resource) without having authorization to do so.

security violation

(I) An act or event that disobeys or otherwise breaches security policy.

 

https://www.ietf.org/rfc/rfc2828.txt

 

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