Glossary: Security+ Exam Prep 2: Performance-Based Questions

hash

Also written: hashing, file hash

A one-way fingerprint of data that can be compared but never turned back into the data. The same malware hash on several hosts shows the same file, and hashing evidence proves it hasn't changed.

Where the book teaches it

Chapter 2: Domain 1 Tasks: Controls, Change and PKI
Chapter 3: Domain 2 Tasks: Attacks and Indicators
Chapter 5: Domain 4 Tasks: Firewalls, Scans and Automation
Chapter 6: Domain 4 Tasks: Identity, Incidents and Evidence

Related terms

salted hashing encryption chain of custody