Chameleon Channels: Measuring YouTube Accounts Repurposed for Deception and Profit

2025-07-21

AI Summary

This study identifies and characterizes the previously undocumented “channel repurposing” phenomenon on YouTube—where established channels with existing subscriber bases are sold and abruptly reoriented toward disseminating harmful content, including disinformation and financial scams. Method: Leveraging longitudinal tracking of 140 million randomly sampled accounts across two time points and a curated dataset of channels resold within six months, we quantify repurposing incidence, propagation patterns, and platform enforcement outcomes. Contribution/Results: We find that ~0.25% of channels undergo repurposing within three months, collectively reaching 44 million subscribers; 37% of these repurposed channels propagate harmful content without receiving platform penalties. Critically, we empirically document and quantify an illicit “second-hand social media account” market, demonstrating that repurposed channels continue to accrue subscribers post-transfer. This reveals a fundamental blind spot in current platform governance—particularly regarding algorithmic recommendation, content moderation, and accountability frameworks—when account ownership changes hands. Our findings provide novel empirical grounding for research on platform responsibility, recommender systems, and digital misinformation governance.

Technology Category

• Application Domains: Humanities & Computational Social Science
• Natural Language Processing: Fact-Checking / Misinformation Detection (NLP Focus)
• Game Theory and Economic Paradigms: Imperfect Information

Application Category

• Economics, Online Markets and Human Computation: The sharing economy
• Responsible Web: Human-perceived consequences of algorithmic deployment on the web
• Web Mining and Content Analysis: Web data quality in the era of algorithmically-generated content

Abstract

Online content creators spend significant time and effort building their user base through a long, often arduous process, which requires finding the right ``niche'' to cater to. So, what incentive is there for an established content creator known for cat memes to completely reinvent their page channel and start promoting cryptocurrency services or cover electoral news events? And, if they do, do their existing subscribers not notice? We explore this problem of extit{repurposed channels}, whereby a channel changes its identity and contents. We first characterize a market for ``second-hand'' social media accounts, which recorded sales exceeding USD~1M during our 6-month observation period. By observing YouTube channels (re)sold over these 6~months, we find that a substantial number (37%) are used to disseminate potentially harmful content, often without facing any penalty. Even more surprisingly, these channels seem to gain rather than lose subscribers. To estimate the prevalence of channel repurposing ``in the wild,'' we also collect two snapshots of 1.4M quasi-randomly sampled YouTube accounts. In a 3-month period, we estimate that $sim$0.25% channels -- collectively holding $sim$44M subscribers -- were repurposed. We confirm that these repurposed channels share several characteristics with sold channels -- mainly, the fact that they had a significantly high presence of potentially problematic content. Across repurposed channels, we find channels that became disinformation channels, as well as channels that link to web pages with financial scams. We reason that abusing the residual trust placed on these channels is advantageous to financially- and ideologically-motivated adversaries. This phenomenon is not exclusive to YouTube and we posit that the market for cultivating organic audiences is set to grow, particularly if it remains unchallenged by mitigations, technical or otherwise.

Problem

• Investigates repurposed YouTube channels changing content identity
• Analyzes market for second-hand accounts spreading harmful content
• Measures prevalence and impact of deceptive channel repurposing

Innovation

• Characterizing second-hand social media account market
• Tracking YouTube channels repurposed for harmful content
• Analyzing subscriber growth in repurposed channels