Guardians of the Galaxy: Content Moderation in the InterPlanetary File System

Sokoto, Saidu and Balduf, Leonhard and Trautwein, Dennis and Wei, Yiluo and Tyson, Gareth and Castro, Ignacio and Ascigil, Onur and Pavlou, George and Korczynski, Maciej and Scheuermann, Bjorn and Król, Michał (2024) Guardians of the Galaxy: Content Moderation in the InterPlanetary File System. In: Usenix Security Symposium, 2024-08-14 - 2024-08-16. (In Press)

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Abstract

The InterPlanetary File System (IPFS) is one of the largest platforms in the growing “Decentralized Web”. The increasing popularity of IPFS has attracted large volumes of users and content. Unfortunately, some of this content could be considered “problematic”. Content moderation is always hard. With a completely decentralized infrastructure and administration, content moderation in IPFS is even more difficult. In this paper, we examine this challenge. We identify, characterize, and measure the presence of problematic content in IPFS (e.g. subject to takedown notices). Our analysis covers 368,762 files. We analyze the complete content moderation process including how these files are flagged, who hosts and retrieves them. We also measure the efficacy of the process. We analyze content submitted to denylist, showing that notable volumes of problematic content are served, and the lack of a centralized approach facilitates its spread. While we identify fast reactions to takedown requests, we also test the resilience of multiple gateways and show that existing means to filter problematic content can be circumvented. We end by proposing improvements to content moderation that result in 227% increase in the detection of phishing content and reduce the average time to filter such content by 43%.

Item Type:
Contribution to Conference (Paper)
Journal or Publication Title:
Usenix Security Symposium
Uncontrolled Keywords:
Research Output Funding/no_not_funded
Subjects:
?? no - not funded ??
ID Code:
221421
Deposited By:
Deposited On:
18 Jun 2024 13:30
Refereed?:
Yes
Published?:
In Press
Last Modified:
10 Jul 2024 23:20