The cloud computing technology is indisputably assisting individuals, businesses and institutions in increasing their capability, productivity and efficiency. It has eliminated the border restriction of obtaining specialized computing resources and expertise that are not available locally to the organizations and individuals without the need to invest in new infrastructure. However, in spite of the immeasurable benefits the technology promises, it has also raised major challenges, particularly as regards its information security and service availability, stressing the need for an elaborate technique of assessing the associated risk of selecting a particular public cloud services provider among available alternatives using the right risk criteria. This paper proposes an expanded multi-criteria risk parameters for the evaluation of public cloud service providers’ associated risk to produce a more accurate results that meets the dynamic nature of the cloud technology.