API Security Best Practices in 2025: Keys, Tokens, and Secrets

API Security Best Practices in 2025

API keys in environment variables. Rotating secrets. Token expiry. Least privilege. The complete 2025 API security checklist for developers.

This guide covers the key concepts, practical steps, and common mistakes to avoid when addressing this aspect of password security.

Best practices

• Use a dedicated password manager for all credentials
• Enable multi-factor authentication wherever supported
• Use unique passwords for every account
• Regularly audit accounts for breached credentials
• Generate passwords with a cryptographically random generator like PassGeni

How PassGeni helps

PassGeni addresses this challenge directly through its AI-seeded generation engine. Passwords are created client-side using JavaScript's crypto.getRandomValues() API — no data ever leaves your browser.

The Password DNA Score provides a 7-point quality audit so you know exactly how strong each generated password is before you use it.