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Every app has secrets. You have database passwords and API keys. Leaked secrets cause data breaches and financial loss.
You have a few choices for management.
Environment variables are simple. Use them for basic needs. But they are not for high security. Other processes in the container see them.
HashiCorp Vault is a top choice. It encrypts storage. It rotates secrets automatically. It logs every access.
Cloud managers are another option. AWS, GCP, and Azure have these. They are easy to set up. But you get locked into one vendor.
Follow these rules.
- Never put secrets in your code.
- Do not commit secrets to Git.
- Rotate your secrets often.
- Give your app only the secrets it needs.
- Use a secrets linter in your pipeline.
Security is a process. It is not a feature.
Check your app this week.
- Check for OWASP Top 10 flaws.
- Scan your dependencies.
- Review how you handle permissions.
Think like an attacker. Ask how someone will abuse your feature. This makes your system stronger.