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We will present a quantitative, georeferenced analysis of human security during the Colombian conflict from 1988-2003. We will consider (viewing thousands of data points) different types of attacks and clashes between armed groups. For each event type we will present the number of casualties, the armed group(s) involved, and demographic data where these events occur. We will also present, using the ESRI tracking extension, the dynamics of civilian casualties for various combinations of event types. The data argue that policy should focus on three costly circumstances in the Colombian conflict: massacres by right-wing paramilitarists in rural areas, massacres by left-wing guerrillas in rural areas, and guerrilla bombings in both the biggest urban areas and rural areas. Thus, Colombia's central human security challenge, mostly rural (with urban terrorism at times important), can be usefully defined geographically.