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There is a growing interest in understanding the energy and environmental footprint of digital currencies, specifically in cryptocurrencies such as Bitcoin and Ethereum. These cryptocurrencies are operated by a geographically distributed…

Computers and Society · Computer Science 2022-10-24 Ashish Rajendra Sai , Harald Vranken

The meme coin ecosystem has grown into one of the most active yet least observable segments of the cryptocurrency market, characterized by extreme churn, minimal project commitment, and widespread fraudulent behavior. While countless meme…

Cryptography and Security · Computer Science 2026-02-02 Alberto Maria Mongardini , Alessandro Mei

Blockchains are significantly easing trade finance, with billions of dollars worth of assets being transacted daily. However, analyzing these networks remains challenging due to the sheer volume and complexity of the data. We introduce a…

Machine Learning · Computer Science 2024-05-07 Jason Zhu , Arijit Khan , Cuneyt Gurcan Akcora

Copyright detection is an effective method to prevent piracy. However, untrustworthy detection parties may lead to falsified detection results. Due to its credibility and tamper resistance, blockchain has been applied to copyright…

Cryptography and Security · Computer Science 2022-08-25 Zhili Chen , Yuting Wang , Tianjiao Ni

Every year, criminals launder billions of dollars acquired from serious felonies (e.g., terrorism, drug smuggling, or human trafficking) harming countless people and economies. Cryptocurrencies, in particular, have developed as a haven for…

Machine Learning · Computer Science 2021-10-06 Joana Lorenz , Maria Inês Silva , David Aparício , João Tiago Ascensão , Pedro Bizarro

Smart contracts play a vital role in the Ethereum ecosystem. Due to the prevalence of kinds of security issues in smart contracts, the smart contract verification is urgently needed, which is the process of matching a smart contract's…

Cryptography and Security · Computer Science 2023-07-04 Pengxiang Ma , Ningyu He , Yuhua Huang , Haoyu Wang , Xiapu Luo

With the overall momentum of the blockchain industry, crypto-based crimes are becoming more and more prevalent. After committing a crime, the main goal of cybercriminals is to obfuscate the source of the illicit funds in order to convert…

Cryptography and Security · Computer Science 2023-05-25 Dan Lin , Jiajing Wu , Qishuang Fu , Yunmei Yu , Kaixin Lin , Zibin Zheng , Shuo Yang

Can you imagine, blockchain transactions can talk! In this paper, we study how they talk and what they talk about. We focus on the input data field of Ethereum transactions, which is designed to allow external callers to interact with smart…

Cryptography and Security · Computer Science 2025-06-02 Xihan Xiong , Zhipeng Wang , Qin Wang , Endong Liu , Pascal Berrang , William Knottenbelt

We present the first large-scale analysis of 339 cybercriminal activity channels (CACs). Followed by over 23.8 million users, these channels share a wide array of malicious and unethical content with their subscribers, including compromised…

Cryptography and Security · Computer Science 2025-10-22 Sayak Saha Roy , Elham Pourabbas Vafa , Kobra Khanmohammadi , Shirin Nilizadeh

Blockchain technology has rapidly expanded beyond its original use in cryptocurrencies to a broad range of applications, creating vast amounts of immutable, decentralized data. As blockchain adoption grows, so does the need for advanced…

Emerging Technologies · Computer Science 2025-05-08 Marcel Bühlmann , Hans-Georg Fill , Simon Curty

The developers of Ethereum smart contracts often implement administrating patterns, such as censoring certain users, creating or destroying balances on demand, destroying smart contracts, or injecting arbitrary code. These routines turn an…

Cryptography and Security · Computer Science 2021-07-26 Nikolay Ivanov , Hanqing Guo , Qiben Yan

Content scanning systems employ perceptual hashing algorithms to scan user content for illegal material, such as child pornography or terrorist recruitment flyers. Perceptual hashing algorithms help determine whether two images are visually…

Cryptography and Security · Computer Science 2022-12-09 Ashish Hooda , Andrey Labunets , Tadayoshi Kohno , Earlence Fernandes

Blockchain systems and cryptocurrencies have exploded in popularity over the past decade, and with this growing user base, the number of cryptocurrency scams has also surged. Given the graphical structure of blockchain networks and the…

Cryptography and Security · Computer Science 2023-01-06 Jared Gridley , Oshani Seneviratne

Blockchain technology revolutionizes the Internet, but also poses increasing risks, particularly in cryptocurrency finance. On the Ethereum platform, Ponzi schemes, phishing scams, and a variety of other frauds emerge. Existing Ponzi scheme…

Social and Information Networks · Computer Science 2023-10-03 Chengxiang Jin , Jiajun Zhou , Shengbo Gong , Chenxuan Xie , Qi Xuan

The web3 applications have recently been growing, especially on the Ethereum platform, starting to become the target of scammers. The web3 scams, imitating the services provided by legitimate platforms, mimic regular activity to deceive…

Cryptography and Security · Computer Science 2024-10-29 Wenkai Li , Zhijie Liu , Xiaoqi Li , Sen Nie

Cryptocurrency is a fast-moving space, with a continuous influx of new projects every year. However, an increasing number of incidents in the space, such as hacks and security breaches, threaten the growth of the community and the…

Computational Engineering, Finance, and Science · Computer Science 2024-03-12 Inwon Kang , Maruf Ahmed Mridul , Abraham Sanders , Yao Ma , Thilanka Munasinghe , Aparna Gupta , Oshani Seneviratne

The surge in the spread of misleading information, lies, propaganda, and false facts, frequently known as fake news, raised questions concerning social media's influence in today's fast-moving democratic society. The widespread and rapid…

Machine Learning · Computer Science 2021-01-11 Prashansa Agrawal , Parwat Singh Anjana , Sathya Peri

With the popularity of blockchain technology, the financial security issues of blockchain transaction networks have become increasingly serious. Phishing scam detection methods will protect possible victims and build a healthier blockchain…

Machine Learning · Computer Science 2021-08-20 Dunjie Zhang , Jinyin Chen

The rise of deep learning models in the digital era has raised substantial concerns regarding the generation of Not-Safe-for-Work (NSFW) content. Existing defense methods primarily involve model fine-tuning and post-hoc content moderation.…

Computer Vision and Pattern Recognition · Computer Science 2025-01-14 Xin Zhao , Xiaojun Chen , Yuexin Xuan , Zhendong Zhao , Xiaojun Jia , Xinfeng Li , Xiaofeng Wang

The Ponzi scheme, an old-fashioned fraud, is now popular on the Ethereum blockchain, causing considerable financial losses to many crypto investors. A few Ponzi detection methods have been proposed in the literature, most of which detect a…

Cryptography and Security · Computer Science 2024-07-19 Phuong Duy Huynh , Son Hoang Dau , Xiaodong Li , Phuc Luong , Emanuele Viterbo