Check your host's security policy.

http://whitepapers.weloveourhost.com/security.html is a white paper telling you what questions people could ask their web host in order to implement all possible security measures. The article gives clear guide lines on what to do and what not to do. Following the advice in this white paper will make your website, your web hosting account and your computer as secure as possible thus protecting your online creation against cyber attacks. Ignoring this important information will keep your online work vulnerable so my advice is to take a look at the link in top. It will benefit you forever and most of the tips can be implemented at no cost. The only real investment is a little bit of your time. Good luck!