Verify that the OpenID Provider only allows values 'code', 'ciba', 'id_token', or 'id_token code' for response mode. Note that 'code' is preferred over 'id_token code' (the OIDC Hybrid flow), and 'token' (any Implicit flow) must not be used.
Verify that the OpenID Provider mitigates denial of service through forced logout. By obtaining explicit confirmation from the end-user or, if present, validating parameters in the logout request (initiated by the relying party), such as the 'id_token_hint'.
