Abstract
A cloud rewards organizations with agility and cost-efficiency, but goods of the cloud come with security challenges. The sheer volume and immense size of modern-day clouds (big data) make them hard to protect and consequently, vulnerable to abuse. Security and privacy issues are intensified by velocity, volume, and a variety of big data, such as large-scale cloud infrastructures, diversity of data sources and formats, and a massive amount of inter-cloud migration. The virtualization method allows sharing of computing resources among many tenants, which may be business partners, suppliers, competitors, or attackers. Even though there is substantial logical isolation among the virtual machines (VMs), shared hardware creates vulnerabilities to co-resident attacks. This paper gives a glimpse of security issues in the cloud, specifically related to VMs. Here, we concentrate our study on co-resident VM attack and its defense methods.
