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The destruction caused by the COVID -19 virus to the human race is beyond the imagination. This article elucidates how COVID–19 is identified as a threat to human life. The statistical report is given for the some of the countries which are highly affected by this pandemic. The medical advancements and the impact of insufficient medical facilities, are available even in the well-developed nations. The role of Information Technology (IT) in the development of various effective algorithms for the diagnosis and prevention of the disease is discussed. This research article also covers the responsibilities of the various social mediaalong with their vulnerable efforts in carrying awareness to society.

Healthcare system providing cloud-based storage makes possible to store the patient’s therapeutic records to the remote server than keeping the files and radiological images on a hard drive or local storage device which enables the patient to access their medical records at any place from the Internet through a web-based application. The structure of cloud application guarantees the privacy and security of health-related data to preserve the sensitive health information. The architectural design of cloud computing is to alleviate the privacy concern and to fulfill the confidence and trust of the cloud-based healthcare organization. This work proposes a structure for a cloud-based healthcare system to allow patients get to their medical images and reports from the cloud, ensuring that the data are available when it meets the prerequisite of a particular contract that is authorized. The requirements, architecture design, software components, and validation methods of cloud-based healthcare system are introduced.

The advent of wireless Ad-Hoc networks has seen an associated emergence of group applications. In order to secure group applications and prevent unauthorized users from accessing communication data that cannot be protected by wireless Ad-Hoc networks and IP multicast alone, group communication content needs to be encrypted by a shared group key. Key management is necessary to ensure the safety of this group key and to protect the group communication. However, problems arise when group key management schemes are applied to the wireless environment relates to three issues: performance, security and network compatibility. In this paper, the focus is made on UAV-MBN, a military network with a proposal to group key management architecture for the UAV-MBN. In order to tackle two particular wireless group key management problems, operational efficiency and multiple-membership changes, a hybrid group key management approach - which operates within each theatre of UAV-MBN is included. By performing micro-key management, this approach can reduce the operational costs associated with key management and improve the operational efficiency of wireless group key management. A membership-oriented group key management scheme is concentrated to tackle the performance problem of multiple-membership changes. This approach, compared to traditional application-oriented group key management approaches, offers more effective management of multiple-membership changes.