This study intends to analyze cyber risks, understanding how governance structures can affect the service sector. The cyber risk theme has been characterized by financial damages and losses in the occurrence of malfunctions in the digital environment or when data is neglected, stolen or illegally shared. Based on the work developed by Williamson, this study presents the opportunity to understand the influence of transaction costs, adding the cybernetic environment as one of the types of transaction specificities. Likewise, transaction costs will be understood under the dimensions of uncertainty and frequency, in addition to behavioral assumptions regarding the occurrence of cyber threats. It is intended to carry out an exploratory research with semi-structured interviews with actors in the service sector. The specific objectives proposed are: (i) to analyze the complex forms of contracting and mechanisms for mitigating cyber risks;(ii) evaluate the mechanisms used by organizations; (iii) assess the influence of cyber risks on transaction costs. It is intended that this study contributes to the development of organizations, including small and medium-sized ones, as resources linked to losses can be reallocated to the organization's economic activity, while shielding lawsuits against cybercrime.