Without a doubt, for a self-hosted blog, WordPress is the best blog CMS that you can get. However, being a popular and open source software, it also means that hackers have full access to the code which they can scrutinize to find any exploits they can use to hack into any WordPress-enabled site.
On the good side, one of the best things about WordPress is its plugin system that allows anyone to install any plugins or create your own plugins to extend its functionality, including improving security.
Here, I have listed some plugins (and a couple of tricks) that you can use to protect your WordPress blog.
All the plugins and tricks listed below are meant for WP 2.7 and above. If you are still using an older version of WordPress, it’s time to upgrade your blog.