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.
By default, the newest version of WordPress is pretty secure. The development team of WordPress has considered anything that might have been added to some clean hacked wordpress site plugins. Before, WordPress did have holes but now most of them are filled up.
Well, we are talking about WordPress but what is the feeling of performing security checks and updates if your computer is at risk of hackers. There are files which can encrypt key loggers. When this happens they can access visit this site everything that you type on investigate this site your keyboard. You can find a good deal of good antivirus programs on the Internet. Just look for a credible antivirus program or ask experts about this.
You also need to place the"Anyone Can Register" in Settings/General to off, and you ought to have some sort of spam plugin. Akismet is the old standby, the one I use, but there are lots of them these days.
Now we're getting into matters specific to WordPress. Whenever you install WordPress, you need to edit the document config-sample.php and rename it to config.php. You need to install the database details there.
Do your homework and some hunting, but if you're pressed for time and want to get this done once and for all, try the WordPress safety plugin view that I use. It is a relief to know that my site (and company!) are secure.