Secrets Management Best Practices: Beyond Secret Scanning
Secret scanning catches credentials in your code — but that is only one piece of the puzzle. True secrets management covers the entire lifecycle: how secrets are generated, stored, distributed, rotated, and revoked. This guide goes beyond scanning to cover the operational practices that prevent secret leaks from happening in the first place.
Why Secrets Management Matters
new secrets were leaked on GitHub in 2023 alone
average time for attackers to exploit a leaked AWS key
average time to detect and contain a credential breach
Leaked secrets are among the fastest paths from code to compromise. API keys, database credentials, and private keys give attackers direct access to systems without needing to exploit any vulnerability. The problem is not just preventing leaks — it is managing the full lifecycle of every secret in your organization.
The Secrets Lifecycle
Create
Generate secrets with sufficient entropy. Use cryptographic random generators, not predictable patterns.
Store
Store in a dedicated vault with encryption at rest, access control, and audit logging. Never in code, env files, or wikis.
Rotate
Automatically rotate on a schedule (30–90 days) and immediately after any suspected compromise.
Revoke
Revoke and delete secrets when no longer needed. Decommission service accounts, rotate after employee offboarding.
Secrets Management Best Practices
Use a Centralized Vault
Store all secrets in a dedicated secrets manager (HashiCorp Vault, AWS Secrets Manager, GCP Secret Manager). Centralization provides audit trails, access controls, and rotation in one place.
Prefer Short-Lived Tokens
Use tokens that expire after 15–60 minutes instead of long-lived API keys. AWS STS, GCP workload identity, and JWT with short TTLs minimize the blast radius of leaked credentials.
Automate Rotation
Configure automatic rotation for database passwords, API keys, and service account credentials. Manual rotation does not scale and creates gaps during rotation windows.
Implement RBAC for Secrets
Not every service needs every secret. Scope secret access by service, environment, and team. A web server should not have access to database admin credentials.
Never Store Secrets in Code
No secrets in source code, environment files committed to git, Dockerfiles, CI/CD configs, or wiki pages. Use .gitignore, pre-commit hooks, and secret scanning to enforce this.
Encrypt Secrets in Transit
Fetch secrets over TLS. Use the vault's SDK rather than writing secrets to disk. Prefer in-memory injection over environment variables when possible.
Audit Secret Access
Log every secret read, write, and rotation event. Alert on unusual access patterns — a service reading a secret it has never accessed before is a signal.
Plan for Compromise
Have a runbook for leaked secrets: immediate revocation, rotation of affected credentials, forensic analysis of what was accessed, and notification of affected parties.
Secrets Management Tools Comparison
| Tool | Type | Auto-Rotation | Dynamic Secrets | Best For |
|---|---|---|---|---|
| HashiCorp Vault | Self-hosted / HCP | Yes | Yes | Multi-cloud, dynamic secrets |
| AWS Secrets Manager | Managed (AWS) | Yes | No | AWS-native workloads |
| GCP Secret Manager | Managed (GCP) | Manual | No | GCP-native workloads |
| Azure Key Vault | Managed (Azure) | Yes | No | Azure-native workloads |
| CyberArk | Enterprise | Yes | Yes | Enterprise privileged access |
| Doppler | SaaS | Yes | No | Developer-first teams |
Runtime Secrets Protection with eBPF
Secret scanning catches credentials in code before deployment. But what about secrets being accessed at runtime? eBPF monitoring detects when processes read credential files (/root/.aws/credentials, /etc/shadow, .env files) or access secrets through environment variables — catching both legitimate and malicious secrets access in real time.
Detect Secret Leaks with TigerGate
TigerGate scans code for hardcoded secrets, monitors runtime credential access with eBPF, and audits cloud IAM configurations — closing the loop on secrets security.