ISC2 Certified Secure Software Lifecycle Professional (CSSLP) Practice Question
During a waterfall software development project, the security lead wants to make sure the team cannot move from the design phase to implementation until all threat-modeling issues have been reviewed and approved. Which project-management mechanism best enforces this security requirement?
Rely on ad-hoc peer code reviews during implementation
Introduce a control gate that blocks phase exit until security criteria are met
Add mandatory daily stand-up meetings for the development team
Create a service-level agreement defining post-deployment uptime targets
A control gate is a predefined, mandatory decision point placed between major lifecycle phases (e.g., requirements, design, implementation). Before the project can progress, the gate requires evidence that specific entrance and exit criteria-including resolution of threat-model findings-have been satisfied and formally approved. Service-level agreements focus on operational performance targets after deployment, daily stand-ups are Agile ceremonies that do not block phase transitions in waterfall, and informal peer code reviews lack the authority to halt progress. Only a control gate provides the formal checkpoint needed to enforce security criteria before allowing the phase to close.
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ISC2 Certified Secure Software Lifecycle Professional (CSSLP)
Secure Software Lifecycle Management
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