Transferring data and value across different blockchains is one of the biggest obstacles to further expansion. Blockchain interoperability allows different networks to communicate and transfer data between them and are increasingly crucial for blockchain applications. However, the concern about security and privacy in blockchain interoperability arises naturally. This work aims to provide the state-of-the-art related to security and privacy challenges in blockchain interoperability. We conducted a multivocal literature review (MLR) and analyzed 16 scientific and 30 grey literature, respectively. We examined different security and privacy challenges related to both blockchain in general and blockchain interoperability approaches such as Notary Schemes, Sidechains and Hashed Time-Lock Contracts. Possible mitigations are analysed, and open challenges that arose from the mitigations are highlighted. CCS CONCEPTS• Security and privacy → Distributed systems security.

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Abstract-NFC (Near Field Communication) technology allows people to integrate their daily-use loyalty cards, credit cards etc. into their mobile phones. In addition to integrating those cards into mobile devices, NFC technology brings innovation opportunities to mobile communications. It enables two users to easily communicate and exchange data simply by touching two mobile phones to each other. The aim of this paper is to perform a brief review of the published NFC applications in literature and explored the benefits of these applications by classifying them in eight service domains. We believe that this analysis will provide valuable insights for performing rigorous and business relevant research on NFC applications and its service domains.

Usage of the Internet has been changed over the past decade. Current tightly-coupled network architecture limits innovative actions. Besides, companies desire to provide better service while keeping their costs low. Software Defined Networking (SDN) is a new approach that provides abstract, programmable and open networking. It is brought up to address these issues. In this study 1 , we present the design, implementation and evaluation of pre-established multi-path (PMP) based intradomain routing and resource management model for SDN-based networks. PMPs are established between each pair of edge nodes. Controller performs routing, admission control and resource management based on these paths. The experimental works show that the proposed model provides scalable admission control, routing and significantly improves resource utilization.

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