I've had two WordPress blogs. That was in a time when I was doing almost no online marketing, and until I found time to deal with the situation (weeks later), these sites were penalized in the main search engines. They weren't eliminated the evaluations were reduced.
secure your wordpress site Watch out form entries. You can useRegexp to process the data from forms. You can even define preloaded variables as type data in the form of checkboxes, radiobuttons etc..
Hackers don't have the capability once you got all these lined up for your own security to come to a WordPress blog. You can have a WordPress account especially that one that provides big bucks from affiliate marketing to you.
Exclude pages - This plugin adds a checkbox,"include this page in menus", which can be checked by default. If you uncheck it, the page won't appear in any listings of pages (which contains, and my latest blog post is ordinarily limited to, your page navigation menus).
You can make a firewall that blocks hackers from infiltrating your blogs. From coming to your own files, the firewall prevents the hacker. You must also have version of Apache. Upgrade your PHP. It is essential that your system is always filled with upgrades.
Oh . And by the way, I talked about plugins. When you get a plugin, make sure it's a secure one. Do not install any plugin simply because the owner is saying on his website that plugin can allow you to do that or this. Use perhaps, or a test blog to look at the plugin get a software engineer to analyze it carefully. This way isn't a threat for your organization or you.