I purchased my cnc from ebay and although I had already purchased mach 3 software from a legitimate source, when I put my machine together there was an unmarked disk in the box, I assumed this was an installation disk and put it in and it turned out to be mach 3 licensed to fabio. Now I am a real beginner with all of this and, with computers so I assumed everything was okay, it was guys on the forum who told me it was fake and, what was happening was that it changed from my licence to the fabio licence and was a real pain I complained to the company (I thought) I had purchased from but they were actually in china so no progress there. I would never buy pirated software intentionally and if I did, I would`nt install it over the real software, its caused me loads of problems so good luck if you can stop those who sell it.