diff --git a/CORS Misconfiguration/README.md b/CORS Misconfiguration/README.md
index 8d9af8b..7d4d715 100644
--- a/CORS Misconfiguration/README.md	
+++ b/CORS Misconfiguration/README.md	
@@ -177,3 +177,4 @@ function reqListener() {
 * [Exploiting CORS misconfigurations for Bitcoins and bounties - James Kettle | 14 October 2016](https://portswigger.net/blog/exploiting-cors-misconfigurations-for-bitcoins-and-bounties)
 * [Exploiting Misconfigured CORS (Cross Origin Resource Sharing) - Geekboy - DECEMBER 16, 2016](https://www.geekboy.ninja/blog/exploiting-misconfigured-cors-cross-origin-resource-sharing/)
 * [Advanced CORS Exploitation Techniques - Corben Leo - June 16, 2018](https://www.corben.io/advanced-cors-techniques/)
+* [PortSwigger Web Security Academy: CORS](https://portswigger.net/web-security/cors)