I just thought I'd share something I discovered. Last week my 2012 iMac i7 was running slow. I originally thought it was the new VLC update as the mac was running slow when it was running. I turned off VLC and noticed the text I was typing in web browsers was still lagging. It was almost like it was using ruby to key log and send off the details. I decided to install little snitch onto the iMac to investigate further and discovered it was using ruby to connect to a malware site I had identified earlier. The site was blocked at my router. Since blocking ruby in little snitch my mac has returned back to normal. I'm not sure exactly what it was doing, but if any who has more expertise that could investigate and report back, it could help the community.