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The ACM Web Conference (WWW) 2024 において当研究所研究員が研究発表を行いました

デロイト トーマツ サイバーセキュリティ先端研究所(DT-ARLCS)

2024年5月13日から5月17日までの間シンガポールにて開催された、インターネット・ウェブ分野の難関国際会議 The ACM Web Conference (WWW) 2024 において、デロイト トーマツ サイバー合同会社 サイバーセキュリティ先端研究所の論文が採択され、当研究所の研究員である 伊藤 大貴 がその研究論文について Oral および Poster セッションにて発表しました。本会議では、2,008件の投稿論文のうち、厳正な査読審査を通じて採択された405件の論文(採択率20.2%)について、その研究内容が発表・議論されました。

研究成果の発表

2024年5月

Investigations of Top-Level Domain Name Collisions in Blockchain Naming Services

学会・研究会:The ACM Web Conference (WWW) 2024
著者:Daiki Ito, Yuta Takata, Hiroshi Kumagai, and Masaki Kamizono (DTCY)
URL:https://dl.acm.org/doi/10.1145/3589334.3645459(外部サイト)

論文概要

Traditionally, top-level domains (TLDs) are managed by the Internet corporation for assigned names and numbers (ICANN), and the domain names under them are managed by registrars. Against such a centralized management, a blockchain naming service (BNS) has been proposed to manage TLDs on blockchains without authority intervention. BNS users can register TLD strings as non-fungible tokens and manage the TLD root zone. However, such a decentralized management results in the introduction of a new security issue, BNS TLD name collision, wherein the same TLD is registered in several different BNSs. In this study, we investigated BNS TLD name collisions by analyzing TLDs registered on two BNSs: Handshake and Decentraweb. Specifically, we collected TLDs registered in Handshake and Decentraweb and the associated data, and analyzed the data registration status of BNS TLDs and BNS TLD name collisions. The analysis of 11,595,406 Handshake and 11,889 Decentraweb TLDs revealed 6,973 BNS TLD name collisions. In particular, lastname TLDs, which are intended for use as person names, yielded a large number of registered domain names. In addition, the analysis identified 10 name collisions between the BNS and operational ICANN TLDs. Further, the ICANN TLD candidates under review also had name collisions against the BNS TLDs. Consequently, based on the characteristics of these name collisions and discussions in BNS communities, we considered countermeasures against BNS TLD name collisions. For the further development of BNSs, we believe that it is essential to discuss with the existing Internet communities and coexist with the existing Internet.

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