Abstract: This study discusses the software process improvement through Secured Development Lifecycle (or SDL), a process adopted for the development of software that needs to withstand malicious attack. The process encompasses the addition of a series of security-focused activities and deliverables to each of the phases of software development process. These activities and deliverables include the development of threat models during software design, the use of static analysis code-scanning tools during implementation and the conduct of code reviews and security testing during a focused `security push`.