Update README.md

Author: R00t-Shell

README.md

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 ![Gecko Shell](https://r00t-shell.com/wp-content/uploads/2025/02/Gecko-Shell.png)
 *Gecko-Shell - A Powerful Web Backdoor Tool for Penetration Testing and Security Bypass*
 
+### Default Password
+The default password for the application is **R00t**. Please ensure to change it immediately after installation to enhance security.
+
+
 Gecko is an advanced web backdoor tool designed to bypass security measures, provide root access, and manage shells. It offers a wide range of features for users who need to exploit security weaknesses and gain full control over compromised servers.
 
 ## Features