Insider threat is one of the most critical security threats for any Industry, even it is the most eldest strategy to fall an empire down, very common in diplomacy according to the human history. In the cloud computing ecosystem there are several problems that is harder than the normal (not could) scenarios. If the insider threats are the most dangerous threat even in the non-cloud platform then it must has multi-dimensional attack vectors in cloud computing. Many researches have been done and are being carried out in the field of cyber security for malicious insider attacks. In the provider end of the service, the insider who can harm the system most is the System administrator because he has the highest access control and other privileges. Sometimes when the user demands some resources and the provider is running out of that kind of resource then, they outsource the resource from the third party or cloud broker. The resources are like server, storage and device or public/private cloud. In this paper we propose a technical solution and some policies for the cloud provider to mitigate the insider attack due to the rogue administrator. We also discuss about the possibility of insider attack in outsourcing issue of cloud computing and provide some policies as solution for that problem.

Malicious insider Insider Threat Cloud computing security Cloud outsourcing.