This Atari forums thread discusses various ways to keep your Unreal Tournament 2004 CD-key safe from the growing number of malicious CD-key stealing programs. These programs grab your UT2004 CD-key from your Windows Registry and send it back to the program's author, who allows it to be used to let cheating smacktards and warez monkeys play UT2004 online. The first you'll know about this will be when your key is banned from the master server for cheating, or you're unable to connect because your key is already in use.
One of the methods described in the thread involves some Windows Registry tweaking through the regedit utility, so only attempt it if you know what you're doing! The thread also contains links to a few CD-key 'scrambling' programs which only place your correct CD-key value in your registry when UT2004 is in use, filling it with a dummy value when you're not playing to prevent it being snatched by malicious programs.
Of course, the easiest way to keep your CD-key safe is not to run suspicious-looking programs in emails and forum posts, however the tricks described are a useful precaution.
One of the methods described in the thread involves some Windows Registry tweaking through the regedit utility, so only attempt it if you know what you're doing! The thread also contains links to a few CD-key 'scrambling' programs which only place your correct CD-key value in your registry when UT2004 is in use, filling it with a dummy value when you're not playing to prevent it being snatched by malicious programs.
Of course, the easiest way to keep your CD-key safe is not to run suspicious-looking programs in emails and forum posts, however the tricks described are a useful precaution.