Marc de Vries spoke at the PSI Alliance Conference on June 5th, 2012 about the challenges of liability for public sector bodies providing open data for reuse. While open data is politically driven, lawyers often cite liability as preventing data release. Three potential mistakes public bodies fear are that reusers could claim damages if data is inaccurate, that open data poses unfair competition risks, or violates privacy or intellectual property rights. However, de Vries argues these risks can be addressed through clear procedures, responsibilities, basic metadata, disclaimers, and reasonable response timing for requests.