This document provides a literature review of information systems security techniques from both technical and non-technical perspectives. It discusses four main approaches: functionalist, interpretivist, radical humanist, and radical structuralist. The functionalist view focuses on security policies, the interpretivist view examines the human and social aspects, the radical humanist view considers how security impacts employee development, and the radical structuralist view analyzes how security measures can create tensions. The document concludes that future research should integrate both the technical and socio-organizational characteristics of information security to develop more effective security planning and management.