WordPress is a PHP and database driven blogging platform which has always been targeted by hackers. There are several plugins for WordPress which have been very useful to prevent hacking.
Whenever we talk about tightening up the WordPress security, we usually recommend some basic security tips like use of backup plugins, implementing reCAPTCHAtest, secure WordPress directory browsing. Sometimes, it might not be possible to do all these tasks at once. The below mentioned WordPress security plugins help you take care of all the WordPress security measures (basic and advanced). Read more about 5 Best WordPress Security Plugins