Hello everyone. I've had my Mac for about a year now but I still feel kinda new after years of PC. This evening, I noticed a new little black screen in my Finder folder with hidagent.exe in it. When I Googled it to see what it was, I got some strange results. Oh, forgot to say I downloaded Avast Free for Mac, as I didn't have any antivirus software, as I'd been assured I wouldn't need it - and it declared my new arrival to be safe. Is it? Thanks.