I have had two WordPress blogs hacked into in the past. That was at a time when I was doing very little internet marketing, and until I found time to address the situation (months later), these sites were penalised in the search engines. They were not removed, but the rankings were reduced.
secure your wordpress website will also inform you that there's no htaccess within the directory. You can put a.htaccess record into this directory if you would like, and you can use it to handle this wp-admin directory from Ip Address address or address range. Details of how you can do that are plentiful around the net.
The one I recommend, and the more powerful approach, is to use one of the password generation and storage plugins available on your browser. RoboForm is liked by Lots of people, but I believe after a trial period, you have to pay for it. I use the free version of Lastpass, and I recommend it for those of you find out here who use Internet Explorer or Firefox. That will generate secure passwords for you; you use one master password to log in.
Keep control i thought about this of your assets that are online - Nothing is worse than having your livelihood in somebody else's hands. Why pop over to these guys take chances with something as important as your site?
You can also get an SSL Encyption Security to your WordPress blogs. The SSL Security makes secure and encrypted communications with your site. You may also keep the all of the cookies and history of communication so that all transactions are listed. Make sure that all your sites get SSL security for protection from hackers.
Do your homework and some searching, but if you are pressed for time and need to get this done once and for all, try the WordPress safety plugin that I use. It is a relief to know that my site (and company!) are secure.