OAuth2 for modern APIs

OAuth2 is the industry standard for delegated authorization. In this post, we cover the most common grant flows, best practices for token storage, and how to protect APIs from common attacks such as token replay and CSRF.

Key takeaways

• Use the authorization code flow with PKCE for public clients.
• Store refresh tokens securely and rotate them frequently.
• Validate access tokens on every request and implement scopes.