So far, folk have to install malware on the current MacOSX. Since you didn't download and install the bad software, I would not worry.
Hello, this is my first post. I am a brand new Mac user. Have had my (new to me) refurbished Macbook Pro mid 2012 for 2 weeks now. I got into a slight panic this evening when I clicked on a link on a website that had user tips for mac users. I think it is a very safe site but I clicked on this link and it sent me to some site with a popup warning that said "Malware Warning" this site may harm your computer. Now my friends with me do not go to this strange site, they go to the correct site. Now my friends think there is something wrong with my mac and I should take it in and have it checked out. This would be a 100 mile trip so not happy. Any advice from some experts here. Could it just be some random thing that caused me to end up in the wrong place or is that an indication of a problem.