I have a 2009 mac mini as my main machine. A couple of weeks ago I started getting weird activity on my netflix account. First the language changed to spanish, then some, let's say less than appropriate things started popping up in my viewing history. Seemed strange for everyone in my family, so I changed the password and logged out of all my devices through the netflix account settings. Didn't think about it again for a few days, then checked the account access link again and someone had been logging into my account from Chile even after I had changed the password. I called netflix and it seems that someone had been logging into my account from some android and chromebook devices in Chile for the past couple of weeks. They surmised that since it happened both before and after I changed my password that I had been infected by some rootkit. I've done a bit of google sloothing, but I can't seem to find any way to scan for a rootkit. I did run a scan on bitdefender which found nothing. Any ideas about whether I'm really infected? How I can figure out what's going on? If I am, will upgrading to el capitan do anything for me or is it too late now that I may actually have something. Sorry if this is the wrong forum to ask this question, but I'd appreciate any help y'all can give me. Thanks.