Data Encryption

Summary

Protecting sensitive data both in transit (via HTTPS/TLS) and at rest (encrypting sensitive database fields) so a breach doesn't expose readable sensitive data.

How to Learn This

1Confirm all your API traffic is served over HTTPS, never plain HTTP.
2Encrypt a genuinely sensitive field, e.g. a national ID number, before storing it.
3Learn the difference between encryption (reversible) and hashing (one-way) — use the right one for the right data.

Environment Variables & Secrets

Security Headers

More topics in Security

OWASP Top 10 SQL Injection XSS Prevention CSRF Protection Helmet.js CORS Configuration Input Validation & Sanitization Rate Limiting Environment Variables & Secrets Security Headers Dependency Vulnerability Scanning

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