Self-organizing network technologies (MANET, mesh, vehicular, sensor and opportunistic networks ) enable networks that can extend Internet services on-demand, building communication systems that could substitute/support traditional communication systems in case of emergencies due to natural disasters (e.g. Hurricane Katrina in New Orleans), breakdowns (Italian national blackout in September 2003), and/or attacks (9/11), providing indispensable support for communication between rescue teams and between them and citizens. Self-organizing networks can also play a key role in prevention. These networks are a valuable tool for monitoring the environment (land control to anticipate emergency situations, ranging from detection of toxic/noxious substances, control of volcanic/fault/waterway activity, etc.) and society (control of goods and people in public places such as airports and train stations).