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A probe is

[t]he biometric sample that is submitted to the biometric system to compare against one or more references in the gallery.[1]

Computer security[]

A probe (also called network probe) is

any attempt to gather information about an automated information system or its online users.[2]
[a] technique that attempts to access a system to learn something about the system.[3]

Overview (Computer security)[]

"A probe is characterized by unusual attempts to gain access to a system or to discover information about the system. One example is an attempt to log in to an unused account. Probing is the electronic equivalent of testing doorknobs to find an unlocked door for easy entry. Probes are sometimes followed by a more serious security event, but they are often the result of curiosity or confusion."[4]


  1. Biometrics Identity Management Agency, Biometrics Glossary, at 30 (Ver. 5) (Oct. 2010) (full-text).
  2. Office of Counterintelligence (DXC), Defense CI & HUMINT Center, Defense Intelligence Agency, "Terms and Definitions of Interest for DoD Counterintelligence Professional," at GL-142 (May 2, 2011) (full-text).
  3. Glossary of Key Information Security Terms, at 148.
  4. US-CERT,"Security of the Internet" (full-text).

See also[]