📖 What is Software Development Life Cycle (SDLC)?
The Software Development Life Cycle (SDLC) is a structured process used by organizations to design, develop, and test high-quality software. It consists of several phases, including requirement analysis, design, implementation, testing, deployment, and maintenance, ensuring a systematic approach to software creation.
"For the CCSP, focus on how security is integrated into every phase of the SDLC to create a 'secure-by-design' product."
📚 Certification: CCSP (CCSP)
🔑 What are the Key Concepts of Software Development Life Cycle (SDLC)?
- ▸ Secure SDLC integrates security activities into every phase, ensuring that security is a primary requirement rather than an afterthought added during the final testing stage.
- ▸ Threat modeling during the design phase identifies potential attack vectors and architectural flaws early, allowing developers to implement mitigations before coding begins.
- ▸ Secure coding standards and Static Application Security Testing (SAST) are used during implementation to detect vulnerabilities in the source code without executing the program.
- ▸ Dynamic Application Security Testing (DAST) and penetration testing occur during the testing phase to identify runtime vulnerabilities and configuration errors in a live environment.
- ▸ The maintenance phase involves continuous monitoring and patching, which is critical in cloud environments to address emerging threats and zero-day vulnerabilities post-deployment.
🎯 How does Software Development Life Cycle (SDLC) appear on the CCSP Exam?
You may be asked to identify the most cost-effective phase to address a security flaw. Expect the answer to be the requirements or design phase, emphasizing the concept of 'shifting left'.
A scenario might describe a development team using automated tools to scan source code for vulnerabilities. You will need to identify this as SAST occurring during the implementation phase.
Expect questions regarding the integration of security into a CI/CD pipeline, where you must determine how automated security gates ensure only secure code reaches production.
❓ Frequently Asked Questions
What is the difference between SDLC and DevSecOps in a cloud context?
SDLC is the conceptual framework for software creation. DevSecOps is the practical implementation that automates security controls within a CI/CD pipeline to achieve rapid, secure delivery.
Why is 'shifting left' emphasized for the CCSP exam?
Shifting left means moving security activities to the earliest possible stage of the SDLC. This reduces the cost of remediation and prevents critical vulnerabilities from reaching production.