Definition(s)


Intrusion

An unauthorized act of bypassing the security mechanisms of a network or information system.

Adapted from: CNSSI 4009.

Source: NICCS™ Portal Cybersecurity Lexicon, National Initiative for Cybersecurity Careers and Studies (https://niccs.us-cert.gov/glossary) as of 11 November 2015, Global Standards

 

Intrusion

Unauthorized act of compromising a system (See “attack”).

Source: ANSI/ISA–99.00.01–2007, Security for Industrial Automation and Control Systems, Part 1: Terminology, Concepts, and Models, 29 October 2007. National Standard

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