diff --git a/packages/backend/src/controller/nonceCheck.ts b/packages/backend/src/controller/nonceCheck.ts
index a27a4d6..c98f44c 100644
--- a/packages/backend/src/controller/nonceCheck.ts
+++ b/packages/backend/src/controller/nonceCheck.ts
@@ -1,29 +1,51 @@
 import type { Request, Response } from "caido:utils";
-import { TokenLeakCheck } from "./tokenLeakCheck";
 
-export class NonceCheckController{
-    /**
-     * 응답이 OIDC(OpenID Connect) 플로우인지 확인하는 메서드
-     */
-    
-    public static isOidcFlow(req: Request, res:Response): boolean {
-        if(TokenLeakCheck.extractIdToken(req, res)) {
-            return true;
-        }
-        return false;
+export class NonceCheckController {
+  /**
+   * OIDC 플로우 탐지 로직 (OAuth 2.0과 구분)
+   */
+  public static isOidcFlow(req: Request, res: Response): boolean {
+    const url = req.getUrl();
+    const query = req.getQuery();
+    const location = res.getHeader("Location");
+    const contentType = res.getHeader("Content-Type");
+
+    // 1️⃣ Authorization 요청: scope=openid 포함
+    if (url.includes("/authorize") && /response_type=/.test(query) && (/scope=openid/.test(query)) ){
+      return true;
     }
 
-  
-    public static isNonceCheckRequest(req: Request): boolean {
-        const id_token = TokenLeakCheck.decodeIdToken(req);
-
-        // 1. nonce 파라미터가 포함된 요청인지 확인
-        if (id_token && id_token.includes("nonce=")) {
-            return true;
-        }
-
-        return false;
+    // 2️⃣ Token 응답: id_token 필드 포함
+    if (contentType?.includes("application/json")) {
+      const body = res.getBody();
+      const bodyStr = typeof body === "string" ? body : body?.toString?.() ?? "";
+      if (bodyStr && /id_token/.test(bodyStr)) {
+        return true;
+      }
     }
+
+    // 3️⃣ Redirect 응답: Location 헤더에 id_token 포함
+    if (
+      (res.getCode() === 302 || res.getCode() === 303) &&
+      location &&
+      /id_token=/.test(Array.isArray(location) ? location[0] ?? "" : location ?? "")
+    ) {
+      return true;
+    }
+
+    // 4️⃣ Authorization 요청 + nonce 파라미터 포함
+    if (url.includes("/authorize") && /nonce=/.test(query)) {
+      return true;
+    }
+
+ 
+
+    return false;
+  }
+
+ 
+
+
+
+
 }
-
-
diff --git a/packages/backend/src/index.ts b/packages/backend/src/index.ts
index a5e9113..e2753de 100644
--- a/packages/backend/src/index.ts
+++ b/packages/backend/src/index.ts
@@ -6,7 +6,7 @@ import { CsrfCheck } from "./controller/csrfCheck";
 import { PKCECheck } from "./controller/PKCECheck";
 import { AccessTokenLeakController } from "./controller/accessTokenDetector";
 import { ScopeDetection } from "./controller/scopeDetection";
-// import { NonceCheckController } from "./controller/nonceCheck";
+import { NonceCheckController } from "./controller/nonceCheck";
 import { RedirectBypassController } from "./controller/redirect_uriBypass";
 
 export type API = DefineAPI<{}>;
@@ -26,14 +26,14 @@ export function init(sdk: SDK<API>) {
     await ScopeDetectionController.scan(sdk, req.getUrl());
     await redirectBypassController.testAsync(sdk, req, res);
 
-    // if (NonceCheckController.isOidcFlow(req, res)) {
-    //   await sdk.findings.create({
-    //     title: "OIDC Flow Detected",
-    //     description: "The request appears to be part of an OIDC flow.",
-    //     request: req,
-    //     reporter: "",
-    //   });
-    // }
+    if (NonceCheckController.isOidcFlow(req, res)) {
+       await sdk.findings.create({
+         title: "OIDC Flow Detected",
+         description: "The request appears to be part of an OIDC flow.",
+         request: req,
+         reporter: "",
+       });
+     }
   });
 
   sdk.events.onInterceptRequest(async (sdk, req: Request) => {