Modern Warfare 2 vulnerable to Virus and Trojan attacks

Modern Warfare’s silly practice of opening ports and connecting directly to hosts leaves an easy path for a hacker to launch an attack against your PC. This can become a keylogger, or place your computer under a botnet.

Check the original post for further information:

http://www.modernwarfare2.com/forum/viewtopic.php?f=24&t=181646