Transparency International has long held that the most directly damaging impact of corruption is the diversion of basic resources from poor people. Corruption in humanitarian aid is most egregious form of this, as it deprives the most vulnerable poor people, the victims of natural disasters and civil conflicts, of essential life-saving resources. Humanitarian assistance aims to save lives and alleviate the suffering of people in times of crisis. Yet these noble ambitions do not immunise emergency responses from corrupt abuse. This handbook helps diagnose corruption risks specific to humanitarian operations and to develop a set of good practices aimed at mitigating those risks.