diff --git a/Loader/src/main/java/de/com/baseband/launcher/Loader.java b/Loader/src/main/java/de/com/baseband/launcher/Loader.java
index 1fcb952..bdea4ef 100644
--- a/Loader/src/main/java/de/com/baseband/launcher/Loader.java
+++ b/Loader/src/main/java/de/com/baseband/launcher/Loader.java
@@ -319,6 +319,13 @@ public class Loader implements Util {
             FileReader fileReader = new FileReader(file);
             BufferedReader reader = new BufferedReader(fileReader);
 
+            if(!key.decryptString(reader.readLine()).equals("baseband_login")) {
+                LOGGER.fatal("Login Data Checksum Not Matching!");
+                LOGGER.fatal("This usually only happens when your HWID changes,");
+                LOGGER.fatal("Rerun the Installer.");
+                exit();
+            }
+
             tcn.set("username", key.decryptString(reader.readLine()));
             tcn.set("password", key.decryptString(reader.readLine()));
             tcn.set("hardware-id", getToken());