Security has always been an issue for all website owners, it is still that way no matter if you are using a content management system or FTP to upload your websites.
The same issues effect hundreds of thousands of websites all over the world.
The biggest problem facing wordpress websites is how they are setup and how they are maintained.
Back in 2013 there was an increase in bot attacks on websites.
This continued in 2014 and the truly sad part is that most webmasters do not even realize that it is happening.
There is no perfect solution, but you can reduce the opportunity and the amount of abuse you have to deal with.