Computer Security Issues Facing Alsager Ltd. In upgrading the Alsager Ltd IT facilities, despite numerous advantages that the new systems brings one has to be made aware of the possible threats posing. Virus can effect the system. They are pieces of codes created by hacker to create a nuisances and to another extreme corrupt valuable data. Examples of these can be animated icons flying pass the computer screen and to another extreme can be programmes designed to delete the hard drive. The Computer Virus can be caught through a number of ways. The most highly publicised way, is through the Internet, other ways are through removable storage media, such