Host threats are directed at the system software upon which your applications are built. This includes Windows 2000, Internet Information Services (IIS), the .NET Framework, and SQL Server 2000, depending upon the specific server role. Top host level threats include:
Viruses, Trojan horses, and worms
Denial of service
Arbitrary code execution
A virus is a program that is designed to perform malicious acts and cause disruption to your operating system or applications. A Trojan horse resembles a virus except that the malicious code is contained inside what appears to be a harmless data file or executable program. A worm is similar ...