As for exploits, we've had vulnerability audits performed by some of the best testers in the industry. If you can get get coin out of us, you would deserve it.
...I have just ran a simple port scanner on your server... You have port 21 open (FTP - Running Filezilla), Port 139/445 (NETBIOS & Windows FILE SHARING) AND 3389 (Remote Desktop).. ANY security analyst would tell you to shut these ports. I sure hope you don't keep bit coins on there!
Update:
What the hell? You have so many open ports... Who did you hire to "test" your server?
Discovered open port 445/tcp on 202.56.13.27
Discovered open port 135/tcp on 202.56.13.27
Discovered open port 139/tcp on 202.56.13.27
Discovered open port 3389/tcp on 202.56.13.27
Discovered open port 21/tcp on 202.56.13.27
Discovered open port 80/tcp on 202.56.13.27
Discovered open port 9/tcp on 202.56.13.27
Discovered open port 13/tcp on 202.56.13.27
Discovered open port 49154/tcp on 202.56.13.27
Discovered open port 17/tcp on 202.56.13.27
Discovered open port 49155/tcp on 202.56.13.27
Discovered open port 7/tcp on 202.56.13.27
Discovered open port 49157/tcp on 202.56.13.27
Discovered open port 19/tcp on 202.56.13.27
Discovered open port 49153/tcp on 202.56.13.27
Discovered open port 49152/tcp on 202.56.13.27
Final thing.. Why are you using Windows Server 2008
BETA?