Glossary: Endpoint, Application and Email Security

hash

Also written: hashes, fingerprint

A short fingerprint of a file's bytes that changes completely if even one byte changes. DLP fingerprints, antivirus signatures, code signing and DKIM all rely on hashes.

Where the book teaches it

Chapter 1: Content Filters and Endpoint Security
Chapter 3: Application Security
Chapter 4: Email and Operating System Security

Related terms

MD5 (Message Digest 5)SHA-256 (Secure Hash Algorithm, 256 bits)digital signature signature