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The Secure Software Development concept [emerged in the 1960s] when there was a need to manage complex business systems efficiently. It is a framework that reduces the entire set of procedures for detecting and correcting risks and errors. The US National Institute of Standards and Technology (NIST) [has calculated that Secure SDLC (SDLC) can reduce the cost of fixing vulnerabilities at the design stage by 15 times. The concept has a precise sequence and is divided into six stages of the SDLC concept.