Glossary F
Fail-Safe-Fail-Secure

Fail Safe

A mode of termination of system functions that prevents damage. See fail secure and fail soft for comparison.  To specified system resources and system entities (i.e., specified data, property, ...

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Fail Secure

Fail Secure

A mode of termination of system functions that prevents loss of secure state when a failure occurs or is detected in the system (but ...

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Fail Soft

Fail Soft

Selective termination of affected, non-essential system functions when a failure occurs or is detected in the system. See CNSSI 4009-2015 and (IETF RFC 4949 Ver 2) for more information. See fail ...

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failover-1

Failover

The capability to switch over automatically (typically without human intervention or warning) to a redundant or standby information system upon the failure or abnormal termination ...

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Fault Tolerance

Fault Tolerance

Fault Tolerance is the capability of a system to suffer a fault, but continue to operate. In other way, the system can tolerate the fault ...

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Fail-Accept-Rate

False Accept Rate (FAR)

Proportion of verification transactions with wrongful claims of identity that are incorrectly confirmed. See CNSSI 4009-2015 (ISO/IEC 19795-1:2006) for more information. Defined over an authentication transaction. ...

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False-acceptance

False Acceptance

When a biometric system incorrectly identifiesa biometric subject or incorrectly authenticates a biometric subject against aclaimed identity.See CNSSI 4009-2015 (DoD BiometricsEnterprise Architecture (Integrated) v2.0)  for moreinformation.

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False-negative

False Negative

Incorrectly classifying malicious activity as benign.See NIST SP 800-86 for more information.An instance in which a security tool intended to detect a particular threat fails to ...

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False Positive

False Positive

An erroneous acceptance of the hypothesis that a statistically significant event has been observed. This is also referred to as a type 1 error. When ...

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False Reject Rate (FRR)

False Reject Rate (FRR)

Proportion of verification transactions with truthful claims of identity that are incorrectly denied. See CNSSI 4009-2015 (ISO/IEC 19795-1:2006) for more information. False Reject Rate (defined over an authentication transaction).See NIST SP ...

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False Rejection

False Rejection

The failure of a biometric system to identify a biometric subject or to verify the legitimate claimed identity of a biometric subject. See  CNSSI 4009-2015 (NIAP 7298 ) for more ...

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