The Software Development Life Cycle (SDLC) is a framework defining tasks performed at each step in the software development process. The SDLC consists of 5 phases initiation, development, acquisition, implementation and assessment, operation and maintenance, and disposal.
Phase one: Initaioton initiation is when the need for an IT system is expressed and the purpose and scope of the system are documented.
Phase two: Development and acquisition. In this phase, the IT system is designed, purchased, programmed, developed, or otherwise constructed.
Phase three: Implementation & Assessment. This phase is when the system security features should be configured, enabled, tested, and verified.
Phase four: Operation & Maintenance. Phase four is when the system performs its functions and any modifications are made during this phase.
Phase five: Disposal. The last phase is when the disposition of information, hardware, or software occurs.
A security officer needs to understand all phases of the SDLC because they will be involved in most of the phases and it is their reasonability to make sure the SDLC is running properly and maintained at all times and to make sure that only authorized people have access to the system. The security officer is involved in purchases and acquisitions, security daily tasks, and monitoring regular patch and configuration management functions down to “end of life” making sure that the correct plans and procedures are in place and followed to discard the system information, hardware, or software.
Another reason the SDLC is important to security officers is that they will need to know how to change and add new security measures as technology investments grow across industries. It is not only a security officer’s job to keep the system safe from unauthorized people, but also hackers, malware, and viruses. Security officers, need to know how the SDLC works and operates so that the correct security changes can be made with changes in technology. If they don’t understand the system and don’t change and adapt the security measures and protocols, the new technology may not be compatible with the new security and cause the system to fail or be vulnerable to threats, costing the organization time and money.