better-auth-security-best-practices

Better Auth security best practices involve configuring rate limiting to protect authentication endpoints and applying CSRF protection layers including origin checks and Fetch Metadata validation. These configurations safeguard APIs from abusive traffic and cross-site request forgery attacks.

Handling trusted origins in Better Auth requires establishing concrete configuration requirements for dynamic origin handling to ensure secure redirects. This prevents open redirect vulnerabilities by validating redirect targets against an explicit allowlist of trusted origins before processing authentication callbacks.

Better Auth manages session and cookie security by enforcing strict cookie attributes and supporting cross-subdomain cookie configurations. Implementing these recommended defaults ensures that session tokens remain protected against interception while maintaining valid authentication states across related subdomains.

Yes, Better Auth supports OAuth security practices including PKCE, state tokens, and token encryption. Implementing these measures protects authorization flows by validating request origins and encrypting stored tokens to prevent interception and unauthorized access during the OAuth exchange process.

Security auditing in Better Auth is implemented via database hooks and background task considerations to log authentication events. IP tracking measures require proper proxy header handling to accurately identify client IPs behind reverse proxies for reliable audit trails.

Verifying secret management and safe error handling is required for Better Auth deployments to prevent sensitive data leakage. Establishing verification steps ensures secrets are properly managed and authentication errors return generic messages, avoiding exposure of system internals to attackers.