API key management is the practice of securely generating, distributing, storing, rotating, and revoking API keys used to authenticate applications and services. API keys serve as shared secrets that identify calling applications, control access to API resources, and enable usage tracking. Proper management prevents unauthorized API access, credential exposure, and the cascading compromises that result from leaked or stolen API keys.
Secure API key management begins with generation using cryptographically secure random number generators producing keys with sufficient entropy to resist brute-force attacks. Keys are scoped to specific permissions, resources, and environments -- separating production keys from development keys and limiting each key to the minimum required access. Distribution occurs through secure channels, never through email, chat, or source code repositories. Storage uses encrypted secrets management systems (HashiCorp Vault, AWS Secrets Manager, Azure Key Vault) rather than configuration files, environment variables in plaintext, or application code. Key rotation on regular schedules and after suspected compromise limits the window of exposure from leaked keys. Automated secret scanning in CI/CD pipelines and source code repositories detects accidentally committed keys before they reach public repositories. Usage monitoring tracks API call patterns per key, alerting on anomalies that may indicate key compromise -- unusual geographic origins, request volume spikes, or access to resources outside normal usage patterns. Revocation procedures enable immediate key invalidation when compromise is detected.
API key exposure is one of the most common causes of cloud service breaches. Developers routinely commit API keys to public repositories, embed them in mobile application binaries, or share them through insecure channels. A single exposed API key can grant attackers access to cloud infrastructure, customer data, payment systems, and internal services. Automated bots continuously scan public repositories for committed secrets, exploiting them within minutes of exposure.
CDA addresses API key management within DPS and IAT domain operations. Theater missions implement secrets management infrastructure, deploy automated secret scanning in development pipelines, and establish key rotation procedures that balance security with operational continuity.