Information security means protecting information and information systems from unauthorized access, use, disclosure, disruption, modification, or destruction. The terms information security,
computer security and
information assurance are frequently used interchangeably. These fields are interrelated and share the common goals of protecting the confidentiality, integrity and availability of information; however, there are some subtle differences between them. These differences lie primarily in the approach to the subject, the methodologies used, and the areas of concentration. Information security is concerned with the confidentiality, integrity and availability of data regardless of the form the data may take: electronic, print, or other forms.
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The protection of
information systems against unauthorized
access to or modification of information, whether in
storage, processing or transit, and against the denial of service to authorized users or the provision of service to unauthorized users, including those measures necessary to detect, document, and counter such threats. [
NIS]
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