diff --git a/CustomColumn/Proxy/HTTP/Referer.bambda b/CustomColumn/Proxy/HTTP/Referer.bambda
new file mode 100644
index 0000000..bd9f6c2
--- /dev/null
+++ b/CustomColumn/Proxy/HTTP/Referer.bambda
@@ -0,0 +1,10 @@
+/**
+ * Extracts Referer request header.
+ *
+ * Useful to identify sensitive data leakage via Referer header like
+ * OIDC authorization codes.
+ *
+ * @author emanuelduss
+ **/
+
+return requestResponse.request().hasHeader("Referer") ? requestResponse.request().headerValue("Referer") : "";