This document summarizes a white paper produced by a group discussing how big data can be used for positive social change in developing countries. It defines big data and identifies four main areas of use: advocating and facilitating, describing and predicting, facilitating information exchange, and promoting accountability and transparency. For each area, examples are provided and challenges discussed, such as ensuring data is interpreted correctly, developing ethical standards, and making platforms accessible. Overall, the document argues civil society should engage more in debates around data power and privacy to ensure data analysis benefits communities in developing countries.