Access Anomaly Response

The problem

Suspicious logins and unexpected permission changes surface in logs long after the fact, if anyone looks at all. Responding means manually correlating identity events with activity logs, deciding under pressure, and remembering to undo temporary measures later. Slow response widens the window an attacker has with a compromised account.

How it runs on Neblex

Okta events such as impossible-travel logins, MFA changes, or admin-role grants reach Neblex over webhooks or an event stream. The flow queries Elasticsearch for the recent activity of the affected account and applies your risk rules with conditional branching, using Data Tables for allowlists such as known travel patterns or service accounts.

High-risk events trigger containment: the flow suspends the account or revokes sessions in Okta and notifies the security channel in Slack. An approval step then pauses the run while an analyst reviews the evidence in the task inbox and decides whether to keep the suspension or restore access, with SLA timers escalating if no one responds. When the analyst clears the user, the approve branch restores access in Okta.

Every event, containment action, and human decision is written to a tamper-evident, hash-chained audit trail. Because detection, containment, and review are one flow, there is no gap where an account sits suspended with nobody assigned to look at it.

Step by step

1. 1
   Receive identity eventsOkta sends login anomalies and permission changes to the flow via webhooks or an event stream.
2. 2
   Gather account contextThe flow queries Elasticsearch for recent activity by the account and checks allowlists held in Data Tables.
3. 3
   Contain high-risk accessConditional branching suspends the account or revokes sessions in Okta when risk rules match, and Slack alerts the security team.
4. 4
   Pause for human reviewAn approval step holds the run while an analyst reviews evidence in the task inbox, with SLA escalation if it stalls.
5. 5
   Restore or confirmSaga-style compensation lifts the suspension when the analyst clears the user; confirmed incidents stay contained and documented.

Platform capabilities used

• Webhook and event stream triggers
• Conditional branching
• Approval steps that pause the run
• Saga-style compensation
• SLA timers with escalation
• Hash-chained audit trail

Common questions