Organizations that use computer systems must protect those systems and the information they contain. The functions and services of computer systems are critical for success. Disabling or compromising the computer systems that a business uses can cause irreparable damage to the business and its customers (Vahid et al., 2017).
Two of the threats that organizations must consider are viruses and phishing. A computer virus is a program that is designed to damage, encrypt, or steal information, computer software, or hardware. Viruses must be kept away from critical information systems. Organizations can use a network firewall to prevent unauthorized access to systems. Without it, viruses can be placed directly onto computer systems by hackers who access the systems from outside of the organization's network. Virus scanning software detects viruses that are in storage and memory of computer systems, but in many cases the damage has already been done (Khan et al., 2017).
