58 citations · 133 across the 12 of their papers we have counts for
17 papers
Stop Abandoning Me: Exploring the Landscape of Unmaintained Intimate Partner Abuse Support Applications
Ivy Turk, Jasmin Wyss, Rebekah Overdorf
Many support applications are developed to help users living through intimate partner abuse (IPA). However, many of those projects get abandoned, because the application was a prot…
It is not enough to give your moderation rules to ChatGPT: Policy-as-Prompt Moderation and Its Potential Impacts on Community Governance
Anna Neumann, Jasmin Wyss, Ivy Turk +1
Content moderation practices and governance paradigms are changing rapidly, as fewer human moderators are deployed as `experts' by social media companies in a centralized manner. I…
Traces of Abuse: How Generative AI Impacts Image-Based Sexual Abuse (IBSA) Investigations
Jasmin Wyss, Anna Neumann, Ivy Turk +1
The introduction of generative AI (GAI) into the workflow of image-based sexual abuse (IBSA) only worsened the ease of creation and distribution, victimizing more people than ever.…
Unfair Mistakes on Social Media: How Demographic Characteristics influence Authorship Attribution
Jasmin Wyss, Rebekah Overdorf
Authorship attribution techniques are increasingly being used in online contexts such as sock puppet detection, malicious account linking, and cross-platform account linking. Yet,…
Characterizing and Detecting Propaganda-Spreading Accounts on Telegram
Klim Kireev, Yevhen Mykhno, Carmela Troncoso +1
Information-based attacks on social media, such as disinformation campaigns and propaganda, are emerging cybersecurity threats. The security community has focused on countering the…
Characterizing Retweet Bots: The Case of Black Market Accounts
Tuğrulcan Elmas, Rebekah Overdorf, Karl Aberer
Malicious Twitter bots are detrimental to public discourse on social media. Past studies have looked at spammers, fake followers, and astroturfing bots, but retweet bots, which art…
Tactical Reframing of Online Disinformation Campaigns Against The Istanbul Convention
Tuğrulcan Elmas, Rebekah Overdorf, Karl Aberer
In March 2021, Turkey withdrew from The Istanbul Convention, a human-rights treaty that addresses violence against women, citing issues with the convention's implicit recognition o…
A Dataset of State-Censored Tweets
Tuğrulcan Elmas, Rebekah Overdorf, Karl Aberer
Many governments impose traditional censorship methods on social media platforms. Instead of removing it completely, many social media companies, including Twitter, only withhold t…
Misleading Repurposing on Twitter
Tuğrulcan Elmas, Rebekah Overdorf, Karl Aberer
We present the first in-depth and large-scale study of misleading repurposing, in which a malicious user changes the identity of their social media account via, among other things,…
Thinking Taxonomically about Fake Accounts: Classification, False Dichotomies, and the Need for Nuance
Rebekah Overdorf, Christopher Schwartz
It is often said that war creates a fog in which it becomes difficult to discern friend from foe on the battlefield. In the ongoing war on fake accounts, conscious development of t…
Can Celebrities Burst Your Bubble?
Tuğrulcan Elmas, Kristina Hardi, Rebekah Overdorf +1
Polarization is a growing, global problem. As such, many social media based solutions have been proposed in order to reduce it. In this study, we propose a new solution that recomm…
Ephemeral Astroturfing Attacks: The Case of Fake Twitter Trends
Tuğrulcan Elmas, Rebekah Overdorf, Ahmed Furkan Özkalay +1
We uncover a previously unknown, ongoing astroturfing attack on the popularity mechanisms of social media platforms: ephemeral astroturfing attacks. In this attack, a chosen keywor…
Subtle Censorship via Adversarial Fakeness in Kyrgyzstan
Christopher Schwartz, Rebekah Overdorf
With the shift of public discourse to social media, we see simultaneously an expansion of civic engagement as the bar to enter the conversation is lowered, and the reaction by both…
Questioning the assumptions behind fairness solutions
Rebekah Overdorf, Bogdan Kulynych, Ero Balsa +2
In addition to their benefits, optimization systems can have negative economic, moral, social, and political effects on populations as well as their environments. Frameworks like f…
POTs: Protective Optimization Technologies
Bogdan Kulynych, Rebekah Overdorf, Carmela Troncoso +1
Algorithmic fairness aims to address the economic, moral, social, and political impact that digital systems have on populations through solutions that can be applied by service pro…
Under the Underground: Predicting Private Interactions in Underground Forums
Rebekah Overdorf, Carmela Troncoso, Rachel Greenstadt +1
Underground forums where users discuss, buy, and sell illicit services and goods facilitate a better understanding of the economy and organization of cybercriminals. Prior work has…
How Unique is Your .onion? An Analysis of the Fingerprintability of Tor Onion Services
Rebekah Overdorf, Marc Juarez, Gunes Acar +2
Recent studies have shown that Tor onion (hidden) service websites are particularly vulnerable to website fingerprinting attacks due to their limited number and sensitive nature. I…