There are just so many hackers out there and this extension is one of the answers to bring back life to the site.
For those who dont know how to restore, just install the files in the directory where you want restore your site. You can run the installation file by opening your site in web browser, next it will walk you through. Some times your userid and pwd that you previously used may not work if you are on shared hosting. You need to use your cpanel login thats how mine worked.
Excellent work by Joomla Pack.