Keep headers/logos under 125 pixels high. It takes up valuable viewing space, especially for laptop users, that is best left for the good stuff to appear"above the fold" Take a cue from the big companies, simple logos done well say it all. This is our #1 pet peeve - screaming logos and headers!
Ultimately, fix hacked wordpress will also inform you that there is not any htaccess within the directory. You may place a.htaccess record in to this directory if you would like, and you can use it to manage usage of this wp-admin directory by Ip Address address or address range. Details of how you can do this are plentiful around the internet.
Backup plug-ins is also important. You want to backup database and all the files so in case of a sudden attack, you can easily bring your own site back like nothing.
Keep your WordPress Installation up to date - One of the simplest and most valuable tasks you can do why not find out more yourself is to ensure that your WordPress installation is upgraded. WordPress provides you a notice on your dashboard, so there is really no reason to not do this.
Can you view that folder, Imagine if you go to WP-Content/plugins? If so, upload that blank Index.html file inside that folder as well so people can not see what plugins you have. Someone can use this to get access because if your existing version of WordPress is up to date, if you're using a plugin or an old plugin with a security hole.
But realize that online security is. Don't only be the type that is reactive, take steps to begin today, protecting yourself. Do not let Joe the Hacker make your life miserable and turn all in creating come crashing down in a matter of moments that you've worked hard.