Secrets Management for Development Teams

Inventory secrets and owners

List API credentials, database passwords, signing keys, certificates, webhook verifiers, deployment tokens, and recovery material. For each item, record system, environment, owner, consumer, privilege, creation method, storage location, rotation expectation, and revocation path. Do not copy secret values into the inventory itself.

Search authorized repositories, build settings, deployment configuration, documentation, and logs for likely exposures using approved tools. Coordinate scans with repository and security owners because results can themselves be sensitive. If a live credential appears, stop distributing it, preserve necessary evidence, rotate or revoke it, and follow incident escalation rather than merely deleting the file.

Store and deliver through identity

Use a managed secret store or platform mechanism that encrypts values, authenticates requesters, records access, and supports versioning. Applications should obtain secrets at runtime through a workload identity with least privilege. Avoid embedding them in source, container images, mobile applications, build output, issue trackers, or shared environment files.

Separate environments and tenants so a development identity cannot read production material. Restrict administrators and emergency access. Mask secret-shaped values before logs leave the process, while recognizing that automatic masking is not perfect. Protect secret-store backups, replicas, and export features under the same or stronger access model.

Rotate without breaking services

Define whether the provider supports overlapping versions, dual verification, automatic issuance, and explicit revocation. A safe rotation usually creates a new credential, deploys consumers, verifies healthy use, removes the old credential, and confirms rejection. The exact order depends on whether the secret signs, encrypts, authenticates, or verifies data.

Test rotation in a non-production environment with synthetic dependencies. Include partial deployment, stale workers, rollback, unavailable secret service, and restored backups. Do not leave old credentials active indefinitely as a comfort measure. Assign an expiration and alert when consumers continue using a version scheduled for retirement.

Monitor and respond to exposure

Monitor unusual reads, broad enumeration, failed access, use from unexpected workloads, and changes to policy or versions. Keep logs protected from both secret content and unauthorized editing. Regularly compare actual access with declared consumers and remove stale grants, former staff, unused service identities, and obsolete integrations.

An exposure plan should identify revocation authority, dependent services, customer impact review, evidence handling, communication, and recovery. Rotate according to consequence, not only a calendar. Review inventories, access, expiration, backup controls, drill evidence, and current OWASP guidance quarterly, with immediate action after suspected disclosure or a material platform change.

Move a database credential out of a repository

An authorized team discovers that an application credential was committed to a private repository and copied into its deployment configuration.

1. Notify the security owner, limit further access, and identify the credential's systems, privileges, history, and consumers.
2. Create a narrowly scoped replacement in the approved secret manager and grant only the production workload identity access.
3. Deploy the application to read the new version, verify health and database audit evidence, then revoke the old credential.
4. Review repository and platform access, protected logs, backups, forks, and build artifacts under the incident plan.
5. Add authorized secret scanning, document ownership and rotation, and test the next replacement in staging.

Secret lifecycle record

Maintain this metadata without recording the secret value itself.

• Identity: secret purpose, system, environment, owner, consumers, privilege, and data consequence.
• Storage and delivery: approved manager, workload identity, access policy, encryption, backup, and logging exclusions.
• Rotation: issue method, overlap support, deployment order, health evidence, revocation check, and rollback.
• Monitoring: expected readers, use locations, alerts, access review, expiry, and stale-version detection.
• Incident plan: revocation authority, dependency map, evidence, communication, recovery, and escalation contact.

Common mistakes

• Moving a credential from source code into an unprotected shared environment file and calling the issue resolved.
• Giving every developer and workload read access to the full production secret namespace.
• Rotating a value without finding old consumers, testing overlap, confirming revocation, or protecting backups.

Try one

Sources

• OWASP Secrets Management Cheat SheetOWASP guidance for secret creation, storage, access, rotation, and retirement.
• CISA Cyber EssentialsCISA baseline actions for leaders and small organizations managing cyber risk.