The Defence and Security Programme of Transparency International UK (TI-UK) has released its “Defence Companies Anti-Corruption Index 2012.” TI-UK surveyed 129 companies from 31 countries, drawing information primarily “from what companies disclose publicly on their websites about their anti-corruption systems.” Concluding that two-thirds of the defense companies surveyed “do not provide adequate levels of transparency,” TI-UK seeks to goad those companies into sharing more information about their anti-corruption efforts and to encourage stakeholders to push them in the right direction. This article reviews TI-UK’s findings and recommendations.