Increasingly, data and information are being promoted as a powerful tool to understand and prevent crime and violence. However, there are two key questions that remain largely unanswered: 1) Why is crime clustering in certain neighborhoods? 2) Why do certain individuals turn to crime and not others? Leveraging sophisticated analyzes about urban crime and violence in Latin America and the Caribbean cities, Ciudata Segura analyzed the local determinants of crime and the role of impunity and social networks in driving criminal behavior through the collection and analysis of official and non-official data sources to produce public policy recommendations and action plans. The project, funded by the Inter-American Development Bank (IDB) and developed in collaboration with the Harvard Humanitarian Initiative (HHI), Fundazione Bruno Kessler (FBK), the MIT Media Lab and Citizens Crime Commission, began in 2017 and has resulted in close coordination with local governments and stakeholders, in addition to: the creation of roadmaps, data audits, and capability assessments to determine further interventions; and the production of research instrument for analysis, including a series of surveys and the creation of a visualization tool.