diff --git a/Web_Security/README.md b/Web_Security/README.md
index d29d31f..c2b5389 100644
--- a/Web_Security/README.md
+++ b/Web_Security/README.md
@@ -1,5 +1,8 @@
 # Web Security
 
+* If a database is involved -->  SQL injection.
+
+* If the input is used in the website --> XSS vulnerability.