The software development life cycle (SDLC) defines the steps needed to develop and maintain software through its usefulness. This process is initiated during the software design phase and focuses on quality development standards that result in timely and cost-effective delivery against requirements.
Security analysis and testing is an important component of the development cycle and should be considered through every step of the SDLC, which includes the following phases: analysis, requirements document, design and prototype, implementation (coding), testing and release, and maintenance.
While SDLCs historically were focused on satisfying functional requirements through software development processes, the increase in cyberattacks has resulted in adding the integration of security into each phase of the SDLC.