Terraform Security

Terraform Security Overview

Terraform includes multiple security layers including state file encryption, secrets management via HashiCorp Vault integration, Sentinel policy enforcement, and the principle of least privilege through provider configurations.

State File Security

Terraform state files can contain sensitive information. Remote state backends like S3 (with encryption), Terraform Cloud, and Consul provide encryption at rest and in transit. State locking prevents concurrent modifications that could lead to security issues.

Secrets Management

Sensitive values in Terraform can be marked with the sensitive flag to prevent display in logs and output. Integration with HashiCorp Vault provides dynamic secrets, database credentials, and API key management without exposing sensitive data in configuration files.

Policy Enforcement

Sentinel (Enterprise) and OPA integration allow teams to enforce security policies before infrastructure is provisioned. Policies can restrict resource types, enforce encryption, mandate tagging, and prevent insecure configurations.

Provider Security

Terraform providers are maintained by HashiCorp and the community, with a security review process for official providers. The Terraform Registry includes security scanning for published modules and providers.