chp 12- security

what is information system security?

Information system security is the process of preventing and detecting unauthorized use of the system Security is a vital part of every information system We need to keep the information system safe and free from danger

How would you know the system is becoming obsolete?

The system's maintenance history indicates that adaptive and corrective maintenance are increasing steadily Operational costs or execution times are increasing rapidly, and routine perfective maintenance does not reverse or slow the trend A software package is available that provides the same or additional services faster, better, and less expensively than the current system New technology offers a way to perform the same or additional functions more efficiently Maintenance changes or additions are difficult and expensive to perform Users request significant new features to support business requirements