In July 2014 ISO and IEC published a standard relating to public cloud computing and data protection. The standard aims to address the down-sides of cloud computing and the concerns of the cloud clients, mainly the lack of trust and transparency, by developing controls and recommendations for cloud service providers acting as PII processors. At the same time, the standard aims to assist providers to demonstrate transparency and accountability in the handling of data and information in the cloud. This paper looks briefly at the data protection and security challenges of cloud computing. It discusses the provisions and added value of the standard in the context of the European data protection legislation and also looks at the uptake of the standard one year after its publication.