Identity-centric security is a defense model that treats identity behavior as a primary source of risk. Instead of focusing only on devices or network traffic, it watches how users, machines, and service accounts authenticate, request access, and move through systems. In cloud and SaaS environments, those identities often become the real control point for resources.
This matters because many attacks abuse valid credentials rather than breaking in through malware alone. Stolen tokens, privilege escalation, suspicious service-account use, and unusual access from automated workloads can all signal compromise. Defenders use identity-centric controls to detect impossible travel, abnormal role changes, excessive permissions, and non-human identity misuse. When paired with MFA, least privilege, and identity analytics, this approach can help stop account takeover and limit lateral movement before attackers reach critical data or cloud control planes.