Preventative Control
Noun · Security & Infosec
Definitions
A security control designed to stop an unwanted event, action, or compromise from occurring in the first place rather than merely detecting or documenting it afterward. Firewalls, MFA, input validation, and least privilege are common examples of preventative controls.
In plain English: A security measure meant to stop a problem before it happens.
Example: "Logging helped after the breach, but MFA would have been the more important preventative control at the initial access stage."