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Unravelling Ariadne’s Thread: Exploring the Threats of Decentralised DNS.

Patsakis, C., Casino, F., Lykousas, N. and Katos, V., 2020. Unravelling Ariadne’s Thread: Exploring the Threats of Decentralised DNS. IEEE Access, 8, 118559-118571.

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DOI: 10.1109/ACCESS.2017.DOI


The current landscape of the core Internet technologies shows considerable centralisation with the big tech companies controlling the vast majority of traffic and services. This situation has sparked a wide range of decentralisation initiatives with blockchain technology being among the most prominent and successful innovations. At the same time, over the past years there have been considerable attempts to address the security and privacy issues affecting the Domain Name System (DNS). To this end, it is claimed that Blockchain-based DNS may solve many of the limitations of traditional DNS. However, such an alternative comes with its own security concerns and issues, as any introduction and adoption of a new technology typically does - let alone a disruptive one. In this work we present the emerging threat landscape of blockchain-based DNS and we empirically validate the threats with real-world data. Specifically, we explore a part of the blockchain DNS ecosystem in terms of the browser extensions using such technologies, the chain itself (Namecoin and Emercoin), the domains, and users who have been registered in these platforms. Our findings reveal several potential domain extortion attempts and possible phishing schemes. Finally, we suggest countermeasures to address the identified threats, and we identify emerging research themes.

Item Type:Article
Additional Information:This work was supported by the European Commission under the Horizon 2020 Programme (H2020), as part of the projects CyberSec4Europe ( (Grant Agreement no. 830929), LOCARD ( (Grant Agreement no. 832735) and ECHO, ( (Grant Agreement no 830943)
Uncontrolled Keywords:Blockchain; Blockchain Forensics; Cybercrime; DNS; Malware
Group:Faculty of Science & Technology
ID Code:34212
Deposited By: Symplectic RT2
Deposited On:26 Jun 2020 09:25
Last Modified:14 Mar 2022 14:22


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