Security Engineering

Secure Deployment Practices

3 min read Advanced Engineering Practices

Ship with confidence using HTTPS, secrets management, and least-privilege principles.

Learning objectives

Enable HTTPS and enforce secure headers
Manage secrets safely
Apply least-privilege access

Transport and headers

HTTPS encrypts traffic between the browser and server. Security headers add another layer: Content-Security-Policy, X-Content-Type-Options, and Strict-Transport-Security.

Secrets management

Database passwords, API keys, and tokens should never live in source control. Store them in environment configuration that is excluded from version control and restricted to the server.

# .env example - never commit this file
DB_PASS=change-me-now
API_KEY=keep-it-secret

Least privilege

Every account and service should have only the access it needs. A database user used by the application should not be the root administrator. This limits the blast radius of any single compromise.

Key takeaways

HTTPS and security headers are non-negotiable.
Secrets belong in environment configuration, not code.
Least-privilege access shrinks the impact of breaches.