Understanding and Characterizing Obfuscated Funds Transfers in Ethereum Smart Contracts

Scam contracts on Ethereum have rapidly evolved alongside the rise of DeFi and NFT ecosystems, utilizing increasingly complex code obfuscation techniques to avoid early detection. This paper systematically investigates how obfuscation amplifies the financial risks of fraudulent contracts and...

CVE-2025-47774

Vyper is the Pythonic Programming Language for the Ethereum Virtual Machine. In versions up to and including 0.4.2rc1, the slice builtin can elide side effects when the output length is 0, and the source bytestring is a builtin msg.data or .code. The reason is that for these source locations, the...

CVE-2025-47285 Vyper's `concat()` builtin may elide side-effects for zero-length arguments

Vyper is the Pythonic Programming Language for the Ethereum Virtual Machine. In versions up to and including 0.4.2rc1, concat may skip evaluation of side effects when the length of an argument is zero. This is due to a fastpath in the implementation which skips evaluation of argument expressions...

Comparative Analysis of Blockchain Systems

Blockchain is a type of decentralized distributed database. Unlike traditional relational database management systems, it does not require management or maintenance by a third party. All data management and update processes are open and transparent, solving the trust issues of centralized databas...

Implementation and Security Analysis of Cryptocurrencies Based on Ethereum

Blockchain technology has set off a wave of decentralization in the world since its birth. The trust system constructed by blockchain technology based on cryptography algorithm and computing power provides a practical and powerful solution to solve the trust problem in human society. In order to...

org.webjars.npm:bitcore-lib (=0.15.0), org.webjars.npm:bitcore-mnemonic (=1.5.0) +5 more potentially affected by CVE-2025-27611 via org.webjars.npm:base-x (=3.0.8)

org.webjars.npm:base-x MAVEN version =3.0.8 is affected by a known vulnerability. The following packages have a transitive dependency on org.webjars.npm:base-x and may be impacted: - org.webjars.npm:bitcore-lib =0.15.0 - org.webjars.npm:bitcore-mnemonic =1.5.0 - org.webjars.npm:bs58 =4.0.1 -...

A Comprehensive Study of Exploitable Patterns in Smart Contracts: from Vulnerability to Defense

With the rapid advancement of blockchain technology, smart contracts have enabled the implementation of increasingly complex functionalities. However, ensuring the security of smart contracts remains a persistent challenge across the stages of development, compilation, and execution...

VApps: Verifiable Applications at Internet Scale

Blockchain technology promises a decentralized, trustless, and interoperable infrastructure. However, widespread adoption remains hindered by issues such as limited scalability, high transaction costs, and the complexity of maintaining coherent verification logic across different blockchain layer...

Fishing for Phishers: Learning-Based Phishing Detection in Ethereum Transactions

Phishing detection on Ethereum has increasingly leveraged advanced machine learning techniques to identify fraudulent transactions. However, limited attention has been given to understanding the effectiveness of feature selection strategies and the role of graph-based models in enhancing detectio...

Evaluating the Vulnerability of ML-Based Ethereum Phishing Detectors to Single-Feature Adversarial Perturbations

This paper explores the vulnerability of machine learning models to simple single-feature adversarial attacks in the context of Ethereum fraudulent transaction detection. Through comprehensive experimentation, we investigate the impact of various adversarial attack strategies on model performance...

Towards Stateless Clients in Ethereum: Benchmarking Verkle Trees and Binary Merkle Trees with SNARKs

Ethereum, the leading platform for decentralized applications, faces challenges in maintaining decentralization due to the significant hardware requirements for validators to store Ethereum's entire state. To address this, the concept of stateless clients is under exploration, enabling validators...

Bitcoin'S Edge: Embedded Sentiment in Blockchain Transactional Data

Cryptocurrency blockchains, beyond their primary role as distributed payment systems, are increasingly used to store and share arbitrary content, such as text messages and files. Although often non-financial, this hidden content can impact price movements by conveying private information, shaping...

From Data Behavior to Code Analysis: a Multimodal Study on Security and Privacy Challenges in Blockchain-Based DApp

The recent proliferation of blockchain-based decentralized applications DApp has catalyzed transformative advancements in distributed systems, with extensive deployments observed across financial, entertainment, media, and cybersecurity domains. These trustless architectures, characterized by the...

OpDiffer: LLM-Assisted Opcode-Level Differential Testing of Ethereum Virtual Machine

As Ethereum continues to thrive, the Ethereum Virtual Machine EVM has become the cornerstone powering tens of millions of active smart contracts. Intuitively, security issues in EVMs could lead to inconsistent behaviors among smart contracts or even denial-of-service of the entire blockchain...

MAL-2025-2958 Malicious code in eth-defi (PyPI)

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New npm Malware Attack Infects Popular Ethereum Library with Backdoor

Security researchers at ReversingLabs have discovered a new malware campaign on the npm package repository, revealing a new…...

U.S. Treasury Lifts Tornado Cash Sanctions Amid North Korea Money Laundering Probe

The U.S. Treasury Department has announced that it's removing sanctions against Tornado Cash, a cryptocurrency mixer service that has been accused of aiding the North Korea-linked Lazarus Group to launder their ill-gotten proceeds. "Based on the Administration's review of the novel legal and poli...

Malicious code in ethereum-cryptog (npm)

--- -= Per source details. Do not edit below this line.=- Source: ghsa-malware a9b4f4e2a3a4121480300942e01892de5c8f71fbecf3f907eb9512d09b0a0a16 Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be...

Malicious code in ethereum-cryptoshanye (npm)

--- -= Per source details. Do not edit below this line.=- Source: ghsa-malware be8742e1d67fb9ff1c7a9bd22ac10cb8a783d566b7fab4834e661b94e0210ec3 Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be...

MAL-2025-2554 Malicious code in ethereum-cryptog (npm)

--- -= Per source details. Do not edit below this line.=- Source: ghsa-malware a9b4f4e2a3a4121480300942e01892de5c8f71fbecf3f907eb9512d09b0a0a16 Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be...