Security Tips
Please follow as many of the following security tips as possible. Note that if a hacker enters your admin area, he/she will be able to damage all your ads and configuration.

Delete setup.php immediately after you installed the script. If you lost your admin password and you used script create_admin.php to create a new administrator, immediately delete this script from your server after you used it.

Use strong login data. Do not use normal words as your login data to Admin Area but use something like almsdd5d1svd2s8/oysnc2s5h3da6hq. Your username as well as password can be up to 15 characters long, use all these characters.

If your server allows it, protect your administration directory by .htaccess/.htpasswd files.

Use the configuration option which allows you to set a maximum allowed number of failed login attempts from the same IP address.

If you don't plan to edit configuration, chmod file data/data.php to 644. If you don't plan to edit templates, chmod all files in templates directories to 644.