Cloud storage based information retrieval system has recently emerged to deliver set of documents. To identify security issues and concerns at design level for preventing security breaches during information retrieval from cloud and achieve the secure cloud storage and retrieval of most relevant information is the major objective of this research. Security Metrics at design level a proposed, which includes Maintainability, Reliability, Availability, Serviceability, Integrity and Confidentiality. The result of case study shows that chances of security breaches reduced by prioritizing the corrective actions, using proposed security metrics. By mitigating design level risks, threats and vulnerabilities in the system achieve security goals for decision making in refining the functionality of Cloud based IR System. Further, the outcomes of proposed metrics can automate in future to observer the cloud environment during interaction of users with the cloud storage.