Credit rating agencies (CRAs) such as Standard & Poor ' s and Moody ' s have existed since the beginning of the twentieth century. Their main objective is to increase the effi ciency of the fi nancial markets, by producing ratings expressing the creditworthiness of companies with respect to loans and credits. The intermediary position of CRAs places high demands on the effi ciency of the rating process and the avoidance of confl icts of interest. In practice there is some doubt as to the realism of these objectives and hence the usefulness of ratings even though, paradoxically, they do enjoy broad acceptance. This article discusses the question of whether the criticism that investors and companies have of CRAs is always justifi ed, and what action should be taken when that criticism is justifi ed. Reference is made to the objectives of CRAs and the doubts about their effi ciency and effectiveness that have arisen in many national and international publications. This article provides an insight into how CRAs operate and how this is judged within a society. CRAs have an information transformation function, and the existence of dual information asymmetry might have a negative impact on this. Holding CRAs liable is one of the possible solutions. Legal measures, such as breach of contract and negligence, may offer CRAs incentives to make every reasonable effort to prepare adequate credit ratings and to update ratings in a timely manner. It is nonetheless diffi cult (in the context of liability) to make an objective assessment because CRAs, too, must work under uncertain relationships.