Reported at The Register: "Microsoft has quietly slipped a Universally Unique ID (UUID) into the ISO of build
2600 of Windows XP, thus giving itself the capability of tracking code leaks back to
whoever it was that leaked them. News of the UUID's presence originally broke in
the Microsoft beta newsgroups, but the matter has been followed up by Steve
Gibson of GRC after postings were forwarded to him."
August 28, 2001