CISSP Practice Exam 2025 – Complete Prep Guide

The focus of the Software Development Life Cycle (SDLC) model regarding security is to integrate security in every phase. This approach recognizes that security cannot be an afterthought or solely addressed at the end of the development process. Instead, it should be an integral part of the design, development, testing, and deployment stages.

By embedding security practices throughout the entire SDLC, developers can identify and mitigate potential vulnerabilities early on, create more secure software architectures, and enhance the overall security posture of the application. This proactive approach helps to ensure that security controls are designed alongside functional aspects, resulting in a more resilient system that is better equipped to resist threats and attacks. It promotes a culture of security awareness among all stakeholders involved in the software development process, from project management to coding.

In contrast, delaying security implementation to the end or excluding it from consideration would leave applications vulnerable to a variety of threats, ultimately undermining the purpose of secure development practices. Therefore, integrating security at every phase of the SDLC is essential for building robust and secure applications.