After several attempts, an attacker was able to gain unauthorized access through a biometric sensor using the attacker's actual fingerprint without exploitation. Which of the following is the MOST…

A biometric device tuned toward false positives has a high False Acceptance Rate (FAR), meaning it accepts biometric samples that do not match any enrolled user. Because the attacker used their own real fingerprint with no exploitation, the device simply accepted an unauthorized sample - a classic false positive result caused by overly permissive sensitivity settings.

True negatives represent the system correctly rejecting unauthorized individuals, which is the opposite behavior of what occurred here.

Fail closed means the device denies access when it encounters an error or failure condition, which would prevent unauthorized entry rather than allow it.

The question explicitly states the attacker used their own actual fingerprint without exploitation, ruling out any cloning or duplication of a legitimate user's biometric data.