File Hash

Noun · Security & Infosec

Definitions

  1. A digest value computed from a file's contents using a hashing algorithm such as SHA-256, used to identify files, detect changes, or compare against known-bad samples. A file hash is useful for exact matching, but even small file changes will produce a different hash.

    In plain English: A fingerprint value calculated from a file's contents.

    Example: "The SOC matched the file hash against malware feeds before quarantining the host."

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