Please can someone give me some advice as I'm worried I may have innocently acquired a virus on my macbook pro. Earlier I searched for Book Forums to get some recommendations for reading. I clicked on a book forum UK site but judging by the page that loaded I think it must have been a porn site!!!!! I quickly clicked off the page without doing anything else at all as soon as I realised what had happened. I am fairly new to Mac and have no idea how to check if I have a virus or been infected in any way.