Secrets management controls how passwords, API keys, certificates, and tokens are created, stored, delivered, rotated, monitored, and revoked. The goal is not merely to hide a value in an environment variable; it is to minimise who and what can use it, for how long, and with what evidence.
Inventory Secrets and Owners
Search source repositories, CI/CD settings, cloud accounts, configuration files, shared drives, ticketing systems, and team chat. Classify each secret by system, environment, owner, privilege, expiry, and rotation method.
Treat discovered exposed credentials as compromised. Removing them from the latest Git commit does not remove them from history, forks, logs, or caches; revoke and replace them.
Centralise Storage
Use a managed secrets service or dedicated vault with encryption, access policy, audit, versioning, and availability appropriate to the workload. Do not build a general-purpose vault from a database table unless there is an exceptional, reviewed requirement.
Keep production and non-production boundaries distinct. Developers should not need routine production secrets on laptops.
Prefer Short-Lived Identity
The best stored secret is one that does not exist. Use workload identity, federation, and temporary credentials where platforms support them. Give CI jobs, containers, and services their own identity and narrowly scoped role.
For unavoidable static credentials, set expiry, automate rotation, and design applications to reload values without disruptive manual deployment.
Deliver Secrets Safely
Retrieve secrets at runtime over authenticated, encrypted channels. Avoid putting values in container images, command-line arguments, build output, URLs, or telemetry. Restrict file permissions and memory exposure where the risk justifies it.
Masking in logs is a backup control, not permission to log secrets. Prevent emission at the source and test redaction.
Apply Least Privilege and Separation
Separate the ability to administer the vault from the ability to read application secrets. Scope access by workload, environment, and exact path. Require stronger approval for high-impact credentials and emergency retrieval.
Audit reads, changes, failed access, policy modifications, and bulk retrieval. Alert on unusual locations, identities, rates, and dormant secrets.
Prepare Rotation and Response
Document rotation for databases, third-party APIs, certificates, signing keys, and encryption keys. Test dual-key or overlapping validity when dependencies cannot switch atomically.
Your incident playbook should identify affected systems, revoke access, replace secrets, invalidate sessions, inspect use, and preserve evidence. Measure mean secret age, static-secret count, rotation success, exposed-secret detection time, and revocation time.
DualByte's cybersecurity service can establish a secrets architecture and remove dangerous credentials from delivery workflows.
Sources
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