I was just on the leaky cauldron site and the news today was in regards to a virus in the form of a worm linked to a Harry potter article. I would link you there but I' m not sure how, sorry but the web site if you don't know is www.the-leaky-cauldron.org
Yes I heard about that too, just beware of an email that comes to you from someone or an organization you are not familiar with. The subject if the email has the title "Harry Potter and the Deathly Hallows" and has an offer for you to download the book from their site. Just be aware of it, and don't click on any links in an email like that. Once you click on a link in the email and then on any link on the website it can install spyware on your computer without your knowledge.