Who is accountable for reducing complexity when modernising secrets and identity security?

Why Security and Platform Leaders Own the Complexity Problem

Modernising secrets and identity security is not just a tooling exercise. It is a governance decision about how many control planes, approval paths, and exception models the organisation can sustain. Security leaders own the risk model, while platform leaders own the operational reality of pipelines, workloads, and service accounts. If they do not simplify the operating model, complexity accumulates across rotation, provisioning, logging, and entitlement reviews.

The practical issue is that fragmented ownership creates gaps no single team can see end to end. That is why guidance from OWASP Non-Human Identity Top 10 and control expectations in NIST SP 800-53 Rev 5 Security and Privacy Controls both map accountability back to the people who set policy, not the teams left to live with the exceptions. NHIMG research on the Guide to the Secret Sprawl Challenge shows how quickly unmanaged secrets spread once ownership is split across development, operations, and security.

In practice, many security teams encounter the cost of fragmentation only after a secrets leak, a failed rotation, or a blocked deployment has already exposed the operating model’s weaknesses.

How Accountability Reduces Secrets and Identity Sprawl

Accountability works when one set of leaders defines the target state, then drives it into engineering standards, platform guardrails, and review processes. That means deciding which identities are human, which are non-human, where secrets should exist, how long they should live, and which system owns their lifecycle. The goal is not to centralise every task, but to centralise decision rights and remove duplicated controls.

In a mature model, security and platform leaders jointly enforce a small number of patterns:

• Use a standard workload identity pattern for services instead of ad hoc service accounts.
• Issue secrets just in time, with short time-to-live values and automatic revocation.
• Prefer one authoritative inventory for identities, credentials, and ownership metadata.
• Embed rotation, logging, and exception handling into the platform rather than handling each team separately.
• Review privileged access and secret usage as part of change control, not as an afterthought.

This approach aligns with the realities documented in 52 NHI Breaches Analysis, where credential sprawl, weak lifecycle control, and over-privileged non-human identities repeatedly appear as root causes. It also reflects the direction of current guidance in the Ultimate Guide to NHIs, which treats identity lifecycle ownership as a core operational control, not a side task.

For practical governance, the accountable leader should be able to answer who approves exceptions, who owns rotation failure, who can halt insecure deployments, and who measures control drift. These controls tend to break down in highly federated engineering organisations because no single team has authority over both platform defaults and application-specific exceptions.

Where Shared Responsibility Breaks Down in Real Programs

Tighter control often increases coordination overhead, requiring organisations to balance standardisation against developer velocity and platform constraints. That tradeoff is real, especially during migration from legacy vaults, static keys, and manually managed service accounts.

Best practice is evolving, but there is no universal standard for this yet. Some teams place accountability in a central identity function, while others embed it in platform engineering with security as policy owner. The right model depends on whether the organisation is mainly trying to eliminate secrets sprawl, reduce privileged access risk, or support autonomous workloads that need runtime-issued credentials. In all cases, accountability should be measurable: inventory completeness, rotation success rate, exception age, and the percentage of workloads using approved identity patterns.

NHIMG’s State of Non-Human Identity Security highlights the confidence gap that often appears when ownership is unclear, and the State of Secrets Sprawl 2025 shows how quickly exposure grows when teams rely on local fixes instead of a shared operating model. The most common failure mode is not a lack of tools, but a lack of decision authority over which controls are mandatory and which are optional. That is why accountability belongs with the leaders who can simplify the model, enforce the standard, and retire the exceptions.

Related resources from NHI Mgmt Group

• Who is accountable for deciding whether identity security resources are actually reducing risk?
• Who should be accountable for moving identity security from tactical projects to a business programme?
• Who should be accountable when platform claims do not match the actual identity security architecture?
• Who is accountable when identity security outcomes do not improve after deployment?