Shedding Light on the Dark Web: Authorship Attribution in Radical Forums

Online users tend to hide their real identities by adopting different names on the Internet. On Facebook or LinkedIn, for example, people usually appear with their real names. On other standard websites, such as forums, people often use nicknames to protect their real identities. Aliases are used wh...

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Main Authors: Leonardo Ranaldi, Federico Ranaldi, Francesca Fallucchi, Fabio Massimo Zanzotto
Format: Article
Language:English
Published: MDPI AG 2022-09-01
Series:Information
Subjects:
Online Access:https://www.mdpi.com/2078-2489/13/9/435
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author Leonardo Ranaldi
Federico Ranaldi
Francesca Fallucchi
Fabio Massimo Zanzotto
author_facet Leonardo Ranaldi
Federico Ranaldi
Francesca Fallucchi
Fabio Massimo Zanzotto
author_sort Leonardo Ranaldi
collection DOAJ
description Online users tend to hide their real identities by adopting different names on the Internet. On Facebook or LinkedIn, for example, people usually appear with their real names. On other standard websites, such as forums, people often use nicknames to protect their real identities. Aliases are used when users are trying to protect their anonymity. This can be a challenge to law enforcement trying to identify users who often change nicknames. In unmonitored contexts, such as the dark web, users expect strong identity protection. Thus, without censorship, these users may create parallel social networks where they can engage in potentially malicious activities that could pose security threats. In this paper, we propose a solution to the need to recognize people who anonymize themselves behind nicknames—the authorship attribution (AA) task—in the challenging context of the dark web: specifically, an English-language Islamic forum dedicated to discussions of issues related to the Islamic world and Islam, in which members of radical Islamic groups are present. We provide extensive analysis by testing models based on transformers, styles, and syntactic features. Downstream of the experiments, we show how models that analyze syntax and style perform better than pre-trained universal language models.
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spelling doaj.art-2816118abdb04aefaafb0f3f251349602023-11-23T16:53:30ZengMDPI AGInformation2078-24892022-09-0113943510.3390/info13090435Shedding Light on the Dark Web: Authorship Attribution in Radical ForumsLeonardo Ranaldi0Federico Ranaldi1Francesca Fallucchi2Fabio Massimo Zanzotto3Department of Innovation and Information Engineering, Guglielmo Marconi University, 00193 Rome, ItalyDepartment of Enterprise Engineering, University of Rome Tor Vergata, 00133 Rome, ItalyDepartment of Innovation and Information Engineering, Guglielmo Marconi University, 00193 Rome, ItalyDepartment of Enterprise Engineering, University of Rome Tor Vergata, 00133 Rome, ItalyOnline users tend to hide their real identities by adopting different names on the Internet. On Facebook or LinkedIn, for example, people usually appear with their real names. On other standard websites, such as forums, people often use nicknames to protect their real identities. Aliases are used when users are trying to protect their anonymity. This can be a challenge to law enforcement trying to identify users who often change nicknames. In unmonitored contexts, such as the dark web, users expect strong identity protection. Thus, without censorship, these users may create parallel social networks where they can engage in potentially malicious activities that could pose security threats. In this paper, we propose a solution to the need to recognize people who anonymize themselves behind nicknames—the authorship attribution (AA) task—in the challenging context of the dark web: specifically, an English-language Islamic forum dedicated to discussions of issues related to the Islamic world and Islam, in which members of radical Islamic groups are present. We provide extensive analysis by testing models based on transformers, styles, and syntactic features. Downstream of the experiments, we show how models that analyze syntax and style perform better than pre-trained universal language models.https://www.mdpi.com/2078-2489/13/9/435natural language processingmachine learningdeep learningdark webjihadist forumradicalization
spellingShingle Leonardo Ranaldi
Federico Ranaldi
Francesca Fallucchi
Fabio Massimo Zanzotto
Shedding Light on the Dark Web: Authorship Attribution in Radical Forums
Information
natural language processing
machine learning
deep learning
dark web
jihadist forum
radicalization
title Shedding Light on the Dark Web: Authorship Attribution in Radical Forums
title_full Shedding Light on the Dark Web: Authorship Attribution in Radical Forums
title_fullStr Shedding Light on the Dark Web: Authorship Attribution in Radical Forums
title_full_unstemmed Shedding Light on the Dark Web: Authorship Attribution in Radical Forums
title_short Shedding Light on the Dark Web: Authorship Attribution in Radical Forums
title_sort shedding light on the dark web authorship attribution in radical forums
topic natural language processing
machine learning
deep learning
dark web
jihadist forum
radicalization
url https://www.mdpi.com/2078-2489/13/9/435
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