diff --git a/Classes/prncnfg.md b/Classes/prncnfg.md
index 8b13789..b07c739 100644
--- a/Classes/prncnfg.md
+++ b/Classes/prncnfg.md
@@ -1 +1,18 @@
+COM hijacking 
 
+
+![2222222](https://user-images.githubusercontent.com/25440152/59557556-9c7d5480-8f91-11e9-9f44-fe2de1fc0989.PNG)
+
+
+To register COM hijacking in your registry
+https://gist.github.com/homjxi0e/7894be4695e5f348a749ce5ec31bd314
+
+
+
+Use the following commands.
+```
+
+cscript C:\Windows\System32\Printing_Admin_Scripts\en-US\prncnfg.vbs /? 
+
+```
+