diff --git a/WEB/Config/Validation.php b/WEB/Config/Validation.php
index 2fe55341..49a0d99c 100644
--- a/WEB/Config/Validation.php
+++ b/WEB/Config/Validation.php
@@ -29,4 +29,11 @@ class Validation
         }
         return true;
     }
+    public function ValidateUsername(string $username) : bool{
+        if(!filter_var($username,FILTER_VALIDATE_REGEXP,array("options" => array( "regexp" => "^[^&=_'\-+;<>.]{1,18}$" ))))
+        {
+            return false;
+        }
+        return true;
+    }
 }