The system/application domain that is responsible for the software that runs on the computers of an organization. Common best practices exist in information security, just as they do in other fields, and they provide a starting point for organizations looking to secure their systems. The notion of layered defense should be used by organizations in order to achieve the optimal balance between security and usability. Layered defense should not be overcomplicated. For the system/application domain, according to our text, security measures may generally be divided into three categories: isolating the data, restricting access to the data, and safeguarding the data from loss via redundancy (Wand, D. M. C.).
The computer room / data center of an organization is where the actual hardware that is used to execute the organization’s essential applications is kept. The computer room / data center may benefit from the implementation of all three types of system/application security. When it comes to data isolation and access control, physical access control is the most effective solution. A physical access control system is often implemented via the use of door locks, which may be either physical keys, electronic passcodes, biometrics, or even a mix of all three types. Keeping the data safe from loss is performed by maintaining an environmentally controlled computer room / data center and using a fire suppression system.
It is also recommended that organizations develop a Disaster Recovery Plan for the system/application domain (DRP). A disaster recovery plan (DRP) is a contingency plan that outlines the procedures that will be taken to restore an organization’s infrastructure after an incident such as a natural catastrophe or a flood (Application Domain). From a cooperative arrangement with another company to temporarily take over important business tasks to a Hot site, which is a full replica of the firm’s infrastructure situated in another place, there are many stages of recovery that may be implemented.
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