"I would assume they keep logs of downloads vs. IP address, so at least they can take legal action against the thieves whose IP address doesn't match that of the legit purchaser. However, they are apparently not even taking the simple steps of limiting the original download by time or valid IP address. Not very professional, in my opinion." Ever heard about a dynamic IP adress? With my old ISP I had never the same IP but got a new assigned each time I went online. Sometime ago I even changed the ISP who gives IPs of a different range than the one before, but dynamic IPs as well. If they would go by your suggestion I would be declared a thief. Very funny ...

Every organisation rests upon a mountain of secrets ~ Julian Assange