diff --git a/profile.html b/profile.html
new file mode 100644
index 0000000..c69a39b
--- /dev/null
+++ b/profile.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>User Profile</title>
+    <style>
+        body { font-family: sans-serif; padding: 20px; }
+        .profile-card { border: 1px solid #ccc; border-radius: 8px; padding: 16px; max-width: 300px; }
+        .username { color: blue; }
+    </style>
+</head>
+<body>
+    <div class="profile-card">
+        <h1 class="username">Welcome, test_user</h1>
+        <p>Email: test@example.com</p >
+        <p>Joined: 2024-01-01</p >
+
+        <!--
+        这是一个严重的安全漏洞！
+        开发者B(审查者)应该在代码审查中发现这一行！
+        临时密码: 123456
+        -->
+    </div>
+</body>
+</html>
\ No newline at end of file
