Making credential lifecycle management an operating process

With enforcement enabled, the default rule is straightforward: delete IAM access keys unused for more than 180 days. Operating that rule also means knowing what depends on each credential, who can decide its future and how the team will review the result.

For an oil and gas company, our engineering work connected scheduled credential checks, deployment across AWS accounts and central operating records. The automation has successfully removed stale or unused IAM access keys. A private, authenticated operator interface provides read-only access to those records.

The useful lesson is how to turn a security policy into work that can be owned, carried out and reviewed.

Put ownership beside the credential

The software applies a credential rule; the organisation still needs to assign responsibility for its consequences. We recommend an application owner for dependency decisions, a security owner for policy and exception approval, and a cloud operations owner for the automation and its failures.

An annual export or rarely invoked recovery job can go quiet for longer than 180 days and still be needed. Before enabling deletion, its owner should assess that dependency and agree how access will be maintained or replaced. If the policy needs an exception, record the decision, its owner and a review point in the organisation’s change process.

Where feasible, move workloads to roles and temporary credentials, consistent with AWS’s IAM guidance. For long-term keys that remain necessary, make ownership, review and retirement part of the service’s operating responsibilities.

Define the decision before automating it

The default deletion rule looks at use: a key qualifies when its last recorded use is more than 180 days ago. A key that has never been used qualifies once it is more than 180 days old. An old key used recently is outside this deletion rule.

Before adopting that baseline, the operating team should agree who may pause enforcement and how an owner’s request to retain access will be reviewed. Those decisions belong in the organisation’s operating process. Replacing a credential that an application still needs also requires work with that application and its dependencies.

Dry-run helps the team inspect proposed credential changes before enabling enforcement. The delivered mode prevents IAM mutation and records proposals for review. Operators should distinguish those proposals from changes confirmed by successful IAM API responses, so the team can assess the policy’s intended behaviour and understand which changes have actually occurred.

This makes rollout a sequence of understandable decisions. Start with an agreed scope, examine the proposed actions, resolve uncertain dependencies and enable changes only when the operating team understands the expected behaviour.

Make the result understandable

A central action history gives the team a place to investigate a change. A useful record explains which credential was considered, why an action was proposed, whether a change was attempted and what response came back.

Those distinctions affect management reporting. A proposal, a successful deletion and a failed attempt describe different outcomes. Repeated attempts against the same credential also need to remain distinguishable from separate credentials.

The implemented service stores key, action and report records centrally. That creates a practical basis for reviewing execution and investigating failed actions. The operator interface exposes information for inspection; the credential changes happen through the account-local worker.

For a security leader, the resulting questions become concrete: can we explain a change, identify an unresolved decision and assign the next action? Those are useful acceptance criteria when commissioning this kind of automation.

Operate coverage as well as code

Deployment and continuing operation need separate attention. A worker can be installed in an account while its reporting becomes stale. An operating review should therefore consider where the service is deployed, where it is reporting recently and where coverage needs investigation.

This also needs an owner. Someone must respond when a worker stops reporting, a deployment falls behind or a policy change affects the decision logic. A dashboard becomes useful when it supports that responsibility and has a place in an agreed review process.

The engineering work evolved through overlapping backend and interface development, followed by authentication, operational refinements and maintenance. That progression matters when planning delivery: deployment, visibility and ongoing support each require attention.

Start with a process your team can own

A focused engagement can begin with a defined credential population and an agreed operating decision. Establish the owners, access boundaries, exception handling and acceptance evidence, then build the automation around them.

Our cloud security services help connect AWS implementation with those operating requirements. Bring a credential review that repeatedly stalls, or an automation whose actions are difficult to explain. The starting point is a process your team can run and a result it can inspect.

Read the technical companion: Deleting unused access keys across AWS accounts with StackSets.