Actually I mean is hackers going after unsecured folders in the 4image system. That software is set to keep them from uploading the files via the 4image software. How ever if they want to attack the site, then can bypass the software completely and just go straight to the folder listed at 777 chmod. With a little work they can place php files in those folders and attack the site via that way. But with the .htaccess file above. It will still allow you to upload pictures, text files, and other file extensions of your choice. BUT it keeps php, Perl, and cgi file, the files that can hurt the site.