diff --git a/typings/src/auth-preferences.ts b/typings/src/auth-preferences.ts
index ddab136..7d7bc4d 100644
--- a/typings/src/auth-preferences.ts
+++ b/typings/src/auth-preferences.ts
@@ -82,3 +82,13 @@ export interface SingleUserCredentials {
 //     GOOGLE = 'google',
 //     GITHUB = 'github'
 // }
+
+// DTOs
+export interface AuthenticationPreferencesDTO {
+    authMode: AuthMode;
+    method: ValidAuthMethodDTO;
+}
+
+export type ValidAuthMethodDTO = SingleUserAuthDTO;
+
+export type SingleUserAuthDTO = Omit<SingleUserAuth, 'credentials'>;
diff --git a/typings/src/global-preferences.ts b/typings/src/global-preferences.ts
index d0c15ba..cb45e73 100644
--- a/typings/src/global-preferences.ts
+++ b/typings/src/global-preferences.ts
@@ -1,4 +1,4 @@
-import { AuthenticationPreferences } from './auth-preferences.js';
+import { AuthenticationPreferences, AuthenticationPreferencesDTO } from './auth-preferences.js';
 
 /**
  * Represents global preferences for OpenVidu Meet.
@@ -26,3 +26,11 @@ export interface RoomCreationPolicy {
     allowRoomCreation: boolean;
     requireAuthentication: boolean;
 }
+
+// DTOs
+export interface SecurityPreferencesDTO {
+    authentication: AuthenticationPreferencesDTO;
+    roomCreationPolicy: RoomCreationPolicy;
+}
+
+export type UpdateSecurityPreferencesDTO = Partial<SecurityPreferencesDTO>;