src/de/steamwar/bungeecore/listeners/mods/Fabric.java

@@ -67,12 +67,12 @@ public class Fabric extends BasicListener {
         byte[] data = e.getData();
         Utils.VarInt varInt = Utils.readVarInt(data,0);
 
-        data = Arrays.copyOfRange(data,varInt.length, data.length);
-
         if(data.length != varInt.length + varInt.value) {
             banPlayer(user,player);
         }
 
+        data = Arrays.copyOfRange(data,varInt.length, data.length);
+
         String dataString = "";
 
         try{