if u are using steamCMD to download server file from steam, you can see that steamCMD also generate client.dll that unique for your PC.. I haven't try it, but this solution I think a long time ago. I try to compare hash between my client.dll that was generate by Junkies Client and steamCMD and unbelievable it was same ! :D I think steam will not patch this method because its the only way now to download server file. This method will not work if steam change the workaround of how to get server file.. -- edit -- my method doesn't seem working..nevermind :(