Finally, fix hacked wordpress database will tell you that there's no htaccess in the directory. You may put a.htaccess file if you desire, and you can use it to control access to the wp-admin directory by IP address or address range. Details of how to do this are easily available on the net.
Strong passwords - Do what you can to use a password, alpha-numeric. Easy to remember passwords are easy to guess!
Keep your WordPress Installation up to date - One of the simplest and most valuable tasks you can do yourself is to ensure that your WordPress installation is updated. WordPress gives you a notice in your dashboard, so there's really no reason to not do this.
You can also create a firewall that blocks hackers from infiltrating your blogs. From coming into your files, the hacker is prevented by the firewall. You must have version of Apache. Upgrade your PHP. It is important that your system is full of upgrades.
When your website is new, you do think about needing security but you do have to protect yourself and your investment. Having a site go down and not go to the website having the ability to restore it quickly may mean a loss of consumers who can't find you and won't remember to look for your site later. Do not let that happen to you. Back your site up after you get it started, and schedule frequent backups for as long as the website is operational. This way, you'll have peace and WordPress security of mind.