diff --git a/abac/templates/user_detail.html b/abac/templates/user_detail.html
index 67d19ea..c9e78b8 100644
--- a/abac/templates/user_detail.html
+++ b/abac/templates/user_detail.html
@@ -42,6 +42,9 @@
     </table>
 
     <h3 class="mt-4">Upload Precertified Definitions</h3>
+    <div class="alert alert-warning mt-3">
+        <strong>Attention:</strong> These attributes are not encrypted and are immediatley forwarded to the NGAC backend! <strong>Do NOT upload senesitive information here!</strong>
+    </div>
     <form method="post" enctype="multipart/form-data" class="mb-3">
         {% csrf_token %}
         <div class="custom-file mb-3">