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Concept
IT risk
Summary
Information technology risk, IT risk, IT-related risk, or cyber risk is any risk relating to information technology. While information has long been appreciated as a valuable and important asset, the rise of the knowledge economy and the Digital Revolution has led to organizations becoming increasingly dependent on information, information processing and especially IT. Various events or incidents that compromise IT in some way can therefore cause adverse impacts on the organization's business processes or mission, ranging from inconsequential to catastrophic in scale.
Assessing the probability or likelihood of various types of event/incident with their predicted impacts or consequences, should they occur, is a common way to assess and measure IT risks. Alternative methods of measuring IT risk typically involve assessing other contributory factors such as the threats, vulnerabilities, exposures, and asset values.
IT risk: the potential that a given threat will exploit vulnerabilities of an asset or group of assets and thereby cause harm to the organization. It is measured in terms of a combination of the probability of occurrence of an event and its consequence.
The Committee on National Security Systems of United States of America defined risk in different documents:
From CNSS Instruction No. 4009 dated 26 April 2010 the basic and more technical focused definition:
Risk – Possibility that a particular threat will adversely impact an IS by exploiting a particular vulnerability.
National Security Telecommunications and Information Systems Security Instruction (NSTISSI) No. 1000, introduces a probability aspect, quite similar to NIST SP 800-30 one:
Risk – A combination of the likelihood that a threat will occur, the likelihood that a threat occurrence will result in an adverse impact, and the severity of the resulting impact
National Information Assurance Training and Education Center defines risk in the IT field as:
The loss potential that exists as the result of threat-vulnerability pairs.
Official source
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