A Security Operations Center (SOC) analyst receives a high-priority alert indicating unusual user activity.

When there is a strong indication of account compromise (impossible travel, unusual geography, out-of-hours access to sensitive resources), the priority is to reduce attacker dwell time by immediately restricting the account’s ability to authenticate and access data. A “Deprovisioning Users” playbook aligns best with this objective because it is focused on access removal actions such as disabling the user, revoking active sessions, resetting credentials, invalidating refresh tokens, removing risky group memberships, and blocking sign-in until verification is complete. Alert enrichment is valuable, but it does not stop the threat; it only adds context. Malware containment is oriented toward endpoint isolation and malicious file/process containment, not identity-based risk. Phishing investigations is appropriate when the primary entry vector is suspected phishing and the goal is to analyze messages, URLs, and affected recipients, but it still may not provide the immediate identity lockdown needed. In SOC operations, identity compromise often demands rapid containment through account restriction first, followed by investigation to confirm legitimacy, determine scope, and safely restore access with stronger controls such as MFA and conditional access.