Our proposed project creates a multi-institution, multi-disciplinary effort to develop a holistic approach to security and privacy for M&V populations. Our ambitious goals are to create security & privacy design principles that can mitigate harm and improve the benefit of technology for M&V populations. These principles will be based on strong technical foundations, social science theory, and direct collaboration with M&V communities, and will be synthesized through sustained investigation of different marginalized populations and their needs and the existing and emerging technologies with which they interact.