Trojan.Win32.Cosmu.xxs (or Mal/SillyFDC-A) is another malicious Trojan horse that represents a security risk for a compromised PC system or a network environment. Trojan.Win32.Cosmu.xxs should not be taken lightly and contains characteristics of a severe security risk. Trojan.Win32.Cosmu.xxs penetrates the system without the user’s knowledge or permission and easily contacts a remote server to download other harmful parasites onto the infected computer. Symptoms may include your computer screen flipping upside down or inverting and documents or messages printing on your printer by themselves. For the safety of your computer, Trojan.Win32.Cosmu.xxs should be removed immediately.