diff --git a/README.md b/README.md
index b518d77..a80be7e 100644
--- a/README.md
+++ b/README.md
@@ -62,6 +62,10 @@ python3 -m http.server              # from the project root
 
 Now open http://localhost:8000/maps/ in a browser.
 
+## Origins
+
+This project builds on [MXmap](https://mxmap.ch) ([source](https://github.com/davidhuser/mxmap)), a solo project by David Huser mapping the email providers of ~2,100 Swiss municipalities, which spawned around ten country-specific forks across Europe. SecAssure2026 extends that work to all of Germany, Austria and Switzerland and adds a dedicated email-security scanning stage.
+
 ## License
 
 First-party code in this repository is released under the **MIT License** — see [LICENSE](LICENSE).
diff --git a/index.html b/index.html
index 2802dbe..a2f9930 100644
--- a/index.html
+++ b/index.html
@@ -48,7 +48,7 @@ <h3>🛡️ Email Security</h3>
     </a>
   </div>
   <div class="landing-footer">
-    <p>Part of an ongoing research project currently in peer review. Open source &amp; open data on <a href="https://github.com/mxmap/secassure2026" target="_blank">GitHub</a>.</p>
+    <p>Part of an ongoing research project currently in peer review. Successor to <a href="https://mxmap.ch" target="_blank">mxmap.ch</a>. Open source &amp; open data on <a href="https://github.com/mxmap/secassure2026" target="_blank">GitHub</a>.</p>
   </div>
 </div>
 </body>