diff --git a/data/workshop/exercise4.mdx b/data/workshop/exercise4.mdx
index c907761..4500936 100644
--- a/data/workshop/exercise4.mdx
+++ b/data/workshop/exercise4.mdx
@@ -48,3 +48,6 @@ If you've successfully secured the banks vulnerable payments processor please po
 > Please review [team name] solution for exercise 4, our payments processor application is now unhackable.
 
 This exercise is worth `25` points. The event team will reply in slack to confirm your updated team total score 🎉 
+
+![safe](/static/images/security/hack-prevented.png)
+
diff --git a/public/static/images/security/hack-prevented.png b/public/static/images/security/hack-prevented.png
new file mode 100644
index 0000000..b651b6b
Binary files /dev/null and b/public/static/images/security/hack-prevented.png differ