Enhancing Security in Software Development Life Cycle

Computer system facing security attack. To handle proper security in a software we must consider the security requirements early in the software development life cycle. In this decade there are various techniques exist for proper security requirements during the early phases of Software Development Life Cycle (SDLC) there are .In this paper we are introducing a new methodology which is extend form of VOSREP methodology. In the propose methodology we are measuring the quality of security which is provided by VOSREP by using Security Quality Requirements Engineering (SQUARE) methodology. According to the result of the quality of security we enhancing more security in this propose methodology.