I recently bought a late 2014 Mac mini. Today, I found out that some financial information has been compromised - I don't want to go in to details, but fortunately no harm was done. Still, it's rather scary and I'd like to locate the source of the problem. As my Mac is new, I've been installing a few pieces of software for it, one of which was Adobe Flash. I downloaded it after being prompted by a website (the website belonged to a major television broadcaster here in Britain, it's a legitimate site). Is it possible that I have Flashback, even though I'm running Yosemite and my all the software is up to date? If so, how would I remove it?