What causes the most common Terraform secret leaks?

Secrets leak via hardcoded values in .tf files, variable defaults in Git, and plaintext storage in tfstate—fix with external stores and sensitive flags.

How do you use AWS Secrets Manager with Terraform?

Create secret via CLI, data-source it in Terraform, jsondecode to locals, reference in resources—no code commits needed.

Does marking variables sensitive hide them from state files?

No, sensitive only redacts plan/apply output; secrets still hit tfstate unless using lifecycle ignores or external management.

⚙️ DevOps & Platform Eng

Terraform Secrets: The State File Trap No One Talks About

You're knee-deep in Terraform, spinning up AWS resources, when bam—a database password slips into your state file. Here's how to lock that down for good.

DevTools Feed Apr 04, 2026 4 min read 10 views

Terraform configuration securely fetching database credentials from AWS Secrets Manager

⚡ Key Takeaways

Never hardcode secrets or use variable defaults—pull from AWS Secrets Manager or Vault instead. 𝕏
Terraform state files store secrets in plaintext; use remote encrypted backends and strict IAM. 𝕏
Mark outputs/vars sensitive, but true security demands ephemeral creds and OIDC for zero-state leaks. 𝕏

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#aws secrets manager #hashicorp vault #iac security #sensitive data terraform #terraform secrets

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Originally reported by dev.to

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