Correct file & folder permissions for WordPress
Some plugin desapeared to your WordPress installation? Some hacked thing? No problem, if you fix the file permissions on your files you will harden your site.
Fixing ‘.htaccess‘ & ‘wp-admin/index.php‘
First of all, we must verify the permissions of ‘.htaccess‘ and ‘wp-admin/index.php‘. They cannot be writable except for the user. The correct permission for them is 644.
Fixing the rest of installation
Now we fix the rest of the WordPress installation with a 755 permissions.
After that changes you can sleep better from now ;-)