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Securing Node.js Microservices with Mutual TLS (mTLS) Authentication and Vault Secret Storage

Published: Aug 13, 2026 Updated: Aug 13, 2026 Jay Digital Solutions Engineering Team
Securing Node.js Microservices with Mutual TLS (mTLS) Authentication and Vault Secret Storage

Moving Beyond Perimeter-Only Security

Assuming that internal network traffic inside a VPC is safe is a catastrophic architectural flaw. If an attacker breaches a single perimeter service, they can pivot freely across unencrypted internal APIs. Mutual TLS (mTLS) guarantees that both client and server cryptographically verify each other's identity.

Centralizing Dynamic Secrets with HashiCorp Vault

Eliminate hardcoded database passwords by generating short-lived, rotatable credentials dynamically via Vault's database secret engine.

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