Error producido cuando el sistema diagnostica como actividad normal un ataque. [CCN-STIC-432:2006]
Error de un sistema de autenticación biométrico que autoriza el acceso a un impostor. Su probabilidad de ocurrencia (probabilidad de falsa aceptación) es una de sus características significativas.
Habitualmente, estos sistemas pueden ajustarse para variar esta probabilidad dentro de un amplio margen. Desgraciadamente, cuanto más pequeña sea la probabilidad de falsa aceptación, mayor es la probabilidad de falso rechazo.
[Ribagorda:1997]
In biometrics,
the instance of a security system failing to verify or identify an authorized
person. It does not necessarily indicate a flaw in the biometric system; for
example, in a fingerprint-based system, an incorrectly aligned finger on the
scanner or dirt on the scanner can result in the scanner misreading the
fingerprint, causing a false rejection of the authorized user. [CNSSI_4009:2010]
The measure of
the likelihood that the biometric security system will incorrectly reject an
access attempt by an authorized user. A systems false rejection rate typically
is stated as the ratio of the number of false rejections divided by the number
of identification attempts. [CNSSI_4009:2010]
An instance in
which an intrusion detection and prevention technology fails to identify
malicious activity as being such. [NIST-SP800-94:2007]
An instance in
which a security tool intended to detect a particular threat fails to do so. [NIST-SP800-83:2005]
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