diff --git a/testing/testing-api-tester.md b/testing/testing-api-tester.md
index c2f132f..1ea5e50 100644
--- a/testing/testing-api-tester.md
+++ b/testing/testing-api-tester.md
@@ -74,7 +74,7 @@ describe('User API Comprehensive Testing', () => {
       headers: { 'Content-Type': 'application/json' },
       body: JSON.stringify({
         email: 'test@example.com',
-        password: 'secure_password'
+        password: process.env.TEST_USER_PASSWORD
       })
     });
     const data = await response.json();
diff --git a/testing/testing-performance-benchmarker.md b/testing/testing-performance-benchmarker.md
index 4e90dac..1845fb5 100644
--- a/testing/testing-performance-benchmarker.md
+++ b/testing/testing-performance-benchmarker.md
@@ -90,7 +90,7 @@ export default function () {
   // Test critical user journey
   const loginResponse = http.post(`${baseUrl}/api/auth/login`, {
     email: 'test@example.com',
-    password: 'password123'
+    password: __ENV.TEST_USER_PASSWORD
   });
   
   check(loginResponse, {