The most significant factor for software development is software security. In today's era security being the most crucial quality aspect as well as imperative demand for any software projects. To address security a number of approaches, techniques and design have been evolved to secure software applications. Security requirements are used during the software development life cycle in order to reduce vulnerabilities particularly during requirement elicitation by performing functions such as measuring adherence to secure requirement standards, identifying likely vulnerabilities that may exist, and tracing and inspecting security flaws that are sooner or later discovered. To achieve these objectives, the assessment of security using model is more appropriate and its validation signifies the valid impact of functional requirement of secure software. The model to quantify confidentiality is developed using multiple linear regression technique on requirement constructs. The statistical analysis on this study concludes its statistical significance that the calculated data is highly acceptable.

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