Computer Security Resource Center

Computer Security Resource Center

Computer Security
Resource Center

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availability

Abbreviation(s) and Synonym(s):

None

Definition(s):

  Ensuring timely and reliable access to and use of information.
Source(s):
FIPS 200 under AVAILABILITY 44 U.S.C., Sec. 3542
NIST SP 800-137 under Availability 44 U.S.C., Sec. 3542
NIST SP 800-18 Rev. 1 under Availability 44 U.S.C., Sec. 3542
NIST SP 800-30 Rev. 1 under Availability 44 U.S.C., Sec. 3542
NIST SP 800-37 Rev. 1 under Availability 44 U.S.C., Sec. 3542
NIST SP 800-39 under Availability 44 U.S.C., Sec. 3542
NIST SP 800-53 Rev. 4 under Availability 44 U.S.C., Sec. 3542
NIST SP 800-53A Rev. 4 under Availability 44 U.S.C., Sec. 3542
NIST SP 800-60 Vol. 1 Rev. 1 under Availability 44 U.S.C., Sec. 3542
NIST SP 800-60 Vol. 2 Rev. 1 under Availability 44 U.S.C., Sec. 3542
NIST SP 800-171 Rev. 2 44 USC 3552
NIST SP 800-37 Rev. 2
NISTIR 7497 under Availability 44 U.S.C., Sec. 3542
NISTIR 7621 Rev. 1 under Availability 44 U.S.C., Sec. 3542
NIST SP 800-171 Rev. 1 [Superseded] 44 U.S.C., Sec. 3542

  1. Ensuring timely and reliable access to and use of information.
Source(s):
CNSSI 4009-2015 44 U.S.C., Sec. 3542

  As defined in FISMA, the term 'availability' means ensuring timely and reliable access to and use of information.
Source(s):
NIST SP 800-59 under Availability 44 U.S.C., Sec. 3542 (b)(1)(C)

  The property that data or information is accessible and usable upon demand by an authorized person.
Source(s):
NIST SP 800-66 Rev. 1 under Availability 45 C.F.R., Sec. 164.304

  2. Timely, reliable access to data and information services for authorized users.
Source(s):
CNSSI 4009-2015 NSA/CSS Manual Number 3-16 (COMSEC)

  The ability for authorized users to access systems as needed.
Source(s):
NIST SP 800-113 under Availability

  Timely, reliable access to information or a service.
Source(s):
NIST SP 800-152 under Availability

  the timely, reliable access to data and information services for authorized users.
Source(s):
NIST SP 800-16 under Availability

  The security objective that generates the requirement for protection against intentional or accidental attempts to (1) perform unauthorized deletion of data or (2) otherwise cause a denial of service or data.
Source(s):
NIST SP 800-33

  Timely, reliable access to information by authorized entities.
Source(s):
NIST SP 800-57 Part 1 Rev. 4 under Availability
NIST SP 800-57 Part 2 under Availability
NIST SP 800-57 Part 2 Rev.1 under Availability
NIST SP 800-57 Part 1 Rev. 3 under Availability [Superseded]

  The state that exists when data can be accessed or a requested service provided within an acceptable period of time.
Source(s):
NISTIR 4734 under Availability

  measures an attacker’s ability to disrupt or prevent access to services or data. Vulnerabilities that impact availability can affect hardware, software, and network resources, such as flooding network bandwidth, consuming large amounts of memory, CPU cycles, or unnecessary power consumption.
Source(s):
NISTIR 7946 under Availability

  The security goal that generates the requirement for protection against intentional or accidental attempts to (1) perform unauthorized deletion of data or (2) otherwise cause a denial of service or data.
Source(s):
NIST SP 800-27 Rev. A [Withdrawn]

  Timely, reliable access to data and information services for authorized users.
Source(s):
NIST SP 800-70 Rev. 2 under Availability [Superseded]

  Ensuring timely and reliable access to and use of information. Note: Mission/business resiliency objectives extend the concept of availability to refer to a point-in-time availability (i.e., the system, component, or device is usable when needed) and the continuity of availability (i.e., the system, component, or device remains usable for the duration of the time it is needed).
Source(s):
NIST SP 800-160 [Superseded] EGovAct

  Ensuring timely and reliable access to and use of information. Note: Mission/business resiliency objectives extend the concept of availability to refer to a point-in-time availability (i.e., the system, component, or device is usable when needed) and the continuity of availability (i.e., the system, component, or device remains usable for the duration of the time it is needed).
Source(s):
NIST SP 800-160 [Superseded] EGovAct