High Availability Security
Noun · Security & Infosec
Definitions
The security and resilience measures used to keep critical services available even during attacks, failures, or maintenance events. It combines redundancy, failover, segmentation, DDoS readiness, and safe operational design so security incidents do not automatically become outages.
In plain English: Security planning focused on keeping important systems running during attacks or failures.
Example: "Their high availability security plan assumed one region could fail while the identity tier kept operating from another."