By default, the newest version of WordPress is pretty darn secure. The development team of WordPress has considered anything that might have been added to any fix wordpress malware virus plugins. In the past , WordPress did have holes but most of them are stuffed up.
No software system is immune to bugs and vulnerabilities. Security holes will be found and guys will do their best to exploit them. Keeping your software up-to-date is a good way once security holes are found, because their like this products will be fixed by software sellers.
Keep your WordPress Setup to date - One of the simplest and most valuable tasks you can do yourself is to ensure that your WordPress installation is updated. WordPress gives a notice in your dashboard to you, so there's really no reason.
You could even get an SSL Encyption Security to your WordPress blogs. The SSL Security makes encrypted and secure communications with your blog. So that all transactions are recorded, you can even keep the all the cookies and history of communication. Be certain all your sites get SSL security for maximum protection from hackers.
There is. People always know where they can login and they could visit with your login form and try a different combination of user accounts and passwords out. So as to stop this from happening you want to install Login Lockdown. It is a plugin that allows users to more info here attempt and login with a wrong password three times. After that the IP address will be banned from the server for a specific amount of time.