How i can get good security for my website?

I am using Norton Internet security from 2010. I always get best result result. I did not feel any virus problem in my laptop. But i need another help. I have a website as    best social plan (dot)com . My website safe list in all safe web. But I want virus and hacking security for my web. I have already Install SSL. How I can get virus security? My website make by wordpress.