OAuth 2.0 and OpenID Connect Security Testing cho Doanh nghiệp Việt Nam

OAuth 2.0 and OpenID Connect are the dominant protocols for delegated authorisation and authentication. Common implementation flaws include: open redirect vulnerabilities in callback URLs, CSRF in the authorisation flow, token leakage through browser history or referrer headers, insufficient scope validation, token lifetime and revocation issues, and PKCE bypass in public clients. Testing evaluates the complete flow from authorisation request through token issuance to resource access.