IT, security, and identity teams should share ownership, with clear accountability for both protection and spend efficiency. Security teams need to validate access risk, IT teams need to act on usage and remediation data, and finance stakeholders need visibility into where savings come from. That cross-functional model turns identity monitoring into a governance and cost-control discipline.
Why ownership should be shared, not siloed
Cost optimisation from identity threat detection and response is not a security-only task, because the savings usually come from removing waste in access, secrets, and response workflows, not just from stopping attacks. The right owner is the team that can change the control and the spend together, while the other functions supply the evidence and operational follow-through needed to make the savings real.
That means security can identify which alerts, permissions, and identities create unnecessary exposure, but IT usually has to execute the cleanup, automation, or decommissioning work. Finance then helps validate whether the change actually reduced recurring cost, reduced license consumption, or avoided future spend rather than merely shifting it elsewhere.
Where the work belongs in practice
Identity threat detection and response sits across detection, access hygiene, and operational remediation, so ownership should follow the part of the workflow being changed. If the work is about privileged access, credential rotation, or entitlement cleanup, identity and security teams should define the risk and the control target. If the work is about retiring duplicate accounts, reducing tool sprawl, or automating response steps, IT and platform owners usually own execution.
A useful rule is to assign one accountable owner for the savings outcome and separate owners for the inputs that make the outcome credible. Without that split, organisations often count theoretical savings twice, delay remediation because no one owns the fix, or optimise the wrong metric, such as alert volume, instead of actual reduction in exposure and cost.
- NHI Lifecycle Management Guide is useful when the optimisation problem depends on provisioning, rotation, offboarding, and lifecycle cleanup.
- Top 10 NHI Issues helps teams connect ownership gaps to excessive permissions, secrets sprawl, and stale identities.
- Ultimate Guide to NHIs, Key Challenges and Risks gives the broader governance context for why visibility and over-privilege drive both risk and waste.
- CISA cyber threat advisories is a practical external reference when response decisions need to align with active threat conditions and prioritisation.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
NIST CSF 2.0, CIS Controls v8 and NIST Zero Trust (SP 800-207) set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST CSF 2.0 | GV.OC — Organizational Context | Defines who owns security outcomes and related business value. |
| ID.RM — Risk Management Strategy | Connects response work to risk-informed prioritization and governance. | |
| GV.RR — Roles, Responsibilities, and Authorities | Clarifies cross-functional accountability for security and operational actions. | |
| Recommendation — Assign accountable owners for identity response outcomes and expected savings. Prioritize identity cleanup actions by risk reduction and cost impact. Define security, IT, and finance responsibilities for each remediation step. | ||
| CIS Controls v8 | 5 — Account Management | Covers ownership and cleanup of accounts, permissions, and inactive identities. |
| 6 — Access Control Management | Supports least-privilege remediation and entitlement reduction. | |
| 8 — Audit Log Management | Provides evidence for response actions and measurable optimisation outcomes. | |
| Recommendation — Review and remove unused accounts and access paths that create cost and risk. Reduce excess access to cut exposure and operational overhead. Use logs to verify which identity actions drove the cost reduction. | ||
| NIST Zero Trust (SP 800-207) | SC-1 — Policy and Access Decisions | Zero Trust relies on explicit access decisions that can be tightened and simplified. |
| SC-7 — Continuous Verification | Continuous verification supports ongoing identity risk and spend control. | |
| Recommendation — Tighten access decisions to reduce standing access and remediation cost. Continuously verify identity use to detect wasteful or risky access. | ||
Practitioner Guidance
What to verify: Do not accept “savings” claims unless the team can show the before-and-after state, including which identities, permissions, secrets, or workflows were removed, rotated, or automated. If the cost reduction comes from lowering tool usage or licence count, verify that the control change did not simply move risk into another unmanaged channel.
Decision rule: If the change reduces exposure and recurring spend at the same time, let security own the risk decision and IT own the operational change. If the change only reduces spend, require finance to confirm the business case and require security to confirm that the new state still meets minimum access and response requirements.
What good looks like: The organisation can trace each optimisation to a specific control action, a named operational owner, and a measurable cost effect, such as fewer active credentials, fewer stale entitlements, less manual remediation, or lower platform consumption. That is what turns identity detection from a reporting function into a repeatable governance lever.
Practitioner takeaway: Treat cost optimisation as a shared outcome with a single accountable owner for each action, not as a separate programme from identity security. The best model is cross-functional execution with security defining acceptable risk, IT delivering the change, and finance confirming the savings are real.
Related resources from NHI Mgmt Group
- Who should own automated identity threat detection in an IAM programme?
- Who should own identity-first threat detection in an enterprise?
- What do security teams get wrong about identity threat detection and response?
- How should security teams apply identity threat detection and response to privileged identities that have unknown access paths?
Deepen Your Knowledge
Reviewed and updated by the NHIMG editorial team on September 19, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
