Letter: H

hacker
Definition: An unauthorized user who attempts to or gains access to an information system.

hash value
Definition: A numeric value resulting from applying a mathematical algorithm against a set of data such as a file.
Related Term(s): hashing
Synonym(s): cryptographic hash value

hashing
Definition: A process of applying a mathematical algorithm against a set of data to produce a numeric value (a 'hash value') that represents the data.
Extended Definition: Mapping a bit string of arbitrary length to a fixed length bit string to produce the hash value.
Related Term(s): hash value

hazard
Definition: A natural or man-made source or cause of harm or difficulty.
Related Term(s): threat