The proposed NIS Directive mentions cloud computing explicitly. This is not surprising. Cloud infrastructures play an increasingly important role in the digital society. A large part of the EU’s Digital Agenda is the European cloud strategy which aims to speed up adoption of cloud computing for financial and economic benefits. ENISA has often underlined the security opportunities of cloud computing. In this report we analyse how cloud providers, customers in critical sectors, and government authorities can set up cloud security incident reporting schemes.