Lockdown
Noun · Security & Infosec
Definitions
A state or action in which systems, accounts, or environments are tightly restricted to prevent further abuse, spread, or change. Lockdown can refer to emergency containment during incidents or to a heavily hardened operating mode in normal operations.
In plain English: A tightly restricted state used to reduce risk or contain a problem.
Example: "After the phishing wave, the identity team put the tenant into temporary lockdown and blocked new third-party app consents."