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Researchers uncover vulnerabilities leading to predatory trading in popular Ethereum cryptocurrency rollups

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Researchers uncover vulnerabilities leading to predatory trading in popular Ethereum cryptocurrency rollups
Ben Weintraub and his co-authors conducted a large-scale analysis of exploitative trading activities on Ethereum and across popular rollups. Credit: Matthew Modoono/Northeastern University

Ethereum, a decentralized online platform that allows users to conduct financial transactions in Ether cryptocurrency, prides itself on the system’s high security.

But new findings from Northeastern University’s computer scientists and researchers at ETH Zurich, a public research university in Switzerland, show that it might not be so bulletproof, and its users might be susceptible to some market participants’ predatory practices.

“There are direct monetary incentives,” says Ben Weintraub, a Northeastern doctoral student in the Khoury College of Computer Sciences. “So in my view, it’s better if researchers find and publicize it first before people mistakenly lose money.”

Weintraub presented the paper on the findings at the Association for Computing Machinery’s annual Conference on Computer and Communications Security (ACM CCS 2024) held Oct. 14–18 in Salt Lake City. The study is available on the arXiv preprint server.

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He and his co-authors conducted a large-scale analysis of exploitative trading activities on Ethereum itself and across so-called rollups, or off-the-platform services that allow faster processing of higher volumes of transactions.

The researchers found evidence that certain actors can manipulate the market on rollups, which was previously thought to be impossible.

“It was known to be possible on regular Ethereum, but it was thought to be impossible on rollups and we showed that it is not impossible,” Weintraub says.

The paper presents three novel types of attacks in which predatory traders could have made about $2 million in profits in the last three years by manipulating transactions within Ethereum trading networks.

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Ethereum is a network of independent computers across the world that follows the Ethereum protocol—a set of rules on how the computers in the global network can interact with each other. It uses blockchain technology, pioneered by Bitcoin.

A blockchain is a database of transactions that is shared across computers in a network. Once a new block, or a new set of transactions, is added to the blockchain, that data can no longer be removed by anybody, primarily due to cryptographic techniques that highlight any attempts at tampering.

Anyone can create an Ethereum account from anywhere, at any time. No central authority such as a government or a company has control over Ethereum, which means no individual can change the rules or restrict users’ access. Any Ethereum protocol changes require approval from more than half of the network.

Unlike Bitcoin, which is solely a payment system with a name-sake cryptocurrency, Ethereum allows users to build applications, communities and organizations on its platform.

The Ethereum network, however, has a scalability problem—as the number of people using it has grown, the blockchain has reached certain throughput limitations that further inflated the costs for conducting transactions on the platform.

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One solution are the rollups, such as Arbitrum, Optimism and zkSync—which were analyzed by Weintraub—that aim to improve Ethereum’s speed by taking batches of transactions and calculations off Ethereum. This reduced the processing cost of a transaction to roughly 1 cent, Weintraub says.

Some actors make profits trading cryptocurrencies by trying to achieve maximal extractable value, he says, by manipulating the order of transactions that are pending inclusion on the blockchain. The research provides exclusive insights into the volume of maximal extractable value transactions on rollups, costs associated with them, profits made by such exploitative traders, competition between them and response time to such activities across Ethereum and the rollups.

Some methods that malicious actors use are common to financial markets, like arbitrage, when a user buys something on one exchange and quickly sells it for profit on another exchange.

“It’s generally thought to be a good thing because it keeps different exchanges balanced in terms of price,” Weintraub says. “But there are also types [of maximal extractable value] that are not good. One that’s fairly well-known in research is called sandwiching.”

In sandwiching, when a speculator sees someone is about to buy an asset, they buy it first, driving up the price. The speculator then quickly sells it at the higher price.

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Sandwiching is considered a “bad,” manipulative trading strategy affecting the price that other traders get. On Ethereum, block producers—people or groups who get paid when their hardware is randomly selected to verify a block’s transactions—can try to maximize the amount of profit they make by manipulating how transactions are ordered or included in a block before it is added to the blockchain.

“The reason we call this an attack is because it is purely damaging to that victim, who now has to pay a little bit more for their transaction,” Weintraub says. “The system broadly does not benefit at all. There’s just the one who profits—the ‘sandwicher.’”

While the researchers didn’t find traditional sandwich attacks on popular rollups, they identified three potential strategies for them when transactions move between Ethereum and rollups with a time delay.

“This just came from analyzing the protocol and looking at the exact flow of transactions—when they get sent, when the rollup seems to respond to them or when they end up on the blockchain,” Weintraub says.

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“We tested our attacks on [Ethereum’s] test-net, a network of ‘fake’ money that is used by developers to test their applications,” he says. “And, essentially, we stole all of the money from only ourselves.”

Weintraub is currently in contact with major rollups’ developers to see what can be done about the possibility of the attacks. Two types of these novel attacks can be prevented, Weintraub says, while it is unclear how to protect users from the third type.

“Our view is that it’s better to just get this information out there so people, at least, are aware of the risks,” he says.

More information:
Christof Ferreira Torres et al, Rolling in the Shadows: Analyzing the Extraction of MEV Across Layer-2 Rollups, arXiv (2024). DOI: 10.48550/arxiv.2405.00138

Journal information:
arXiv
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Northeastern University

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Australia Cryptocurrency Market Is Accelerating Toward Mainstream Financial Adoption

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Australia Cryptocurrency Market Is Accelerating Toward Mainstream Financial Adoption

Australia’s cryptocurrency industry is rapidly evolving from a niche investment segment into a significant pillar of the country’s digital economy. As blockchain adoption increases across industries and institutional investors deepen their participation in digital assets, Australia is emerging as one of the most dynamic cryptocurrency markets in the Asia-Pacific region. According to IMARC Group, the Australia cryptocurrency market reached a value of USD 54.7 Billion in 2025 and is projected to grow to USD 120.9 Billion by 2034, expanding at a CAGR of 8.94% during 2026–2034.

The market’s expansion is being driven by increasing consumer awareness, rising decentralized finance (DeFi) adoption, stronger blockchain infrastructure, and growing acceptance of cryptocurrencies for payments and investments. Australia’s relatively mature fintech ecosystem, combined with supportive regulatory developments, is helping digital assets transition toward mainstream financial integration.

Institutional investors and financial firms are also contributing significantly to market growth. Banks, investment firms, and payment providers are increasingly exploring crypto-related products and blockchain-powered financial services. The entrance of regulated global exchanges into Australia is strengthening investor confidence while improving market accessibility for retail and corporate users alike.

Another major catalyst is Australia’s focus on regulatory transparency and tax compliance. Government agencies are introducing stronger reporting standards for crypto transactions, helping establish clearer legal frameworks for the industry. These developments are expected to reduce uncertainty while encouraging long-term investment across digital asset markets.

The market is segmented by cryptocurrency type, including Bitcoin, Ethereum, Bitcoin Cash, Ripple, Litecoin, Dashcoin, and others. Components include hardware and software, while processes are divided into mining and transactions. Applications span trading, remittance, payments, and several emerging blockchain-enabled financial services.

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Why the Market Is Growing So Rapidly

One of the biggest drivers behind Australia’s cryptocurrency boom is rising public awareness and adoption. Consumers are becoming increasingly familiar with the advantages of decentralized digital assets, including faster transactions, lower transfer costs, and broader financial accessibility. User-friendly cryptocurrency exchanges and digital wallets are simplifying access for new investors, accelerating mainstream participation across the country.

The expansion of blockchain applications beyond finance is also fueling market growth. Industries such as healthcare, gaming, logistics, and supply chain management are increasingly exploring blockchain-based solutions for secure data sharing, asset tracking, and process automation. Businesses are recognizing the efficiency and transparency benefits of blockchain infrastructure, driving demand for cryptocurrency ecosystems that support these applications.

Institutional participation has become another major growth engine. Financial institutions and major enterprises are increasingly integrating cryptocurrency services into their operations. Australian banks and investment firms are exploring crypto custody, exchange services, and tokenized financial products to meet rising customer demand. This institutional engagement is improving market legitimacy while attracting larger pools of capital into digital assets.

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Australia’s regulatory environment is also supporting industry expansion. Government agencies and financial regulators are working toward clearer crypto compliance frameworks, encouraging innovation while strengthening investor protection. Enhanced tax transparency initiatives and reporting requirements are expected to create a more stable and trustworthy operating environment for businesses and investors.

Technological innovation remains another critical growth factor. Advances in blockchain scalability, cybersecurity, decentralized finance, and artificial intelligence are improving transaction efficiency and digital asset security. The integration of AI-driven compliance monitoring and fraud detection tools is helping businesses strengthen trust within crypto ecosystems while supporting long-term market maturity.

What the Opportunities Are

1. Expansion of Institutional Crypto Services

Banks, investment firms, and fintech companies have significant opportunities to launch regulated crypto products, custody services, and blockchain-powered investment platforms targeting both retail and institutional clients.

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2. Growth in Decentralized Finance (DeFi)

Australia’s tech-savvy population is creating strong demand for decentralized financial solutions that offer lending, borrowing, staking, and yield-generation opportunities outside traditional banking systems.

3. Blockchain Adoption Across Industries

Healthcare, logistics, retail, and government sectors are increasingly exploring blockchain applications for secure transactions, identity management, and operational transparency.

4. Cross-Border Payment Innovation

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Cryptocurrency-based remittance systems can significantly reduce international transaction costs and processing times, particularly for businesses operating across Asia-Pacific markets.

5. AI-Powered Crypto Security Solutions

As digital asset adoption rises, cybersecurity and fraud prevention technologies represent major growth opportunities for startups and enterprise software providers.

6. Tokenization of Real-World Assets

Australia’s financial sector is witnessing growing interest in tokenizing real estate, commodities, and financial securities, opening new investment and liquidity channels.

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7. Crypto Exchange Infrastructure Growth

The entry of international exchanges and expansion of local trading platforms are creating investment opportunities in trading technology, compliance services, and digital asset infrastructure.

Recent News & Developments in Australia Cryptocurrency Market

• February 2025: Australian regulators introduced enhanced cryptocurrency transaction reporting standards aimed at strengthening tax transparency and anti-money laundering compliance across digital asset platforms. The updated framework requires crypto intermediaries to improve transaction disclosures and customer verification processes. Industry experts believe the reforms will improve institutional confidence while accelerating the long-term maturity of Australia’s cryptocurrency ecosystem.

• May 2025: Several major fintech companies and blockchain startups announced new investment programs focused on expanding decentralized finance infrastructure and crypto payment services across Australia. Industry investment commitments reportedly exceeded USD 700 Million as firms accelerated blockchain adoption strategies. Market analysts expect the expansion to strengthen Australia’s position as a regional leader in digital finance innovation.

• September 2025: Australia recorded substantial growth in retail cryptocurrency participation as digital asset ownership reached new highs among younger investors and technology-focused consumers. Industry reports highlighted increased trading activity, rising adoption of crypto wallets, and stronger integration of digital assets into mainstream payment systems. Analysts noted that institutional participation and regulatory clarity are continuing to drive positive momentum throughout the sector.

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Why Should You Know About Australia Cryptocurrency Market?

The Australia cryptocurrency market represents far more than speculative trading—it reflects the broader transformation of financial systems, digital commerce, and technological innovation. As blockchain infrastructure matures and cryptocurrencies become increasingly integrated into mainstream finance, the market is opening new opportunities for businesses, investors, and policymakers alike.

For investors, the sector offers exposure to one of the fastest-growing segments within digital finance and emerging technologies. Businesses can leverage blockchain solutions to improve efficiency, transparency, and transaction security across operations. Policymakers, meanwhile, see cryptocurrency regulation and blockchain innovation as strategically important for maintaining Australia’s competitiveness in the global digital economy.

With strong institutional interest, improving regulation, and expanding real-world applications, Australia’s cryptocurrency market is positioned to remain one of the country’s most transformative and innovation-driven industries over the coming decade.

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CLARITY Act Poll: 52% Support, 70% Say US Should Have Passed Crypto Legislation

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CLARITY Act Poll: 52% Support, 70% Say US Should Have Passed Crypto Legislation

Key Takeaways

Voters Link Crypto Rules to U.S. Financial Leadership

Harrisx, a public opinion research and polling firm, released a national survey on May 7 showing broad voter support for the Digital Asset Market Clarity (CLARITY) Act of 2025. The poll found 52% supported the bill after voters reviewed a policy summary of the legislation, while 11% opposed it. Harrisx surveyed 2,008 registered voters from May 1-4, 2026, with a margin of error of 2.2 percentage points.

Support for the CLARITY Act extended across political groups after voters reviewed a summary of the legislation. Republicans, Democrats, independents, and likely midterm voters all backed the bill by wide margins. Support was strongest among crypto owners, voters familiar with digital assets, and respondents already aware of CLARITY. Awareness of the legislation remained limited overall, with 64% saying they had not heard of the bill before the survey. Another 14% said they had heard a lot, while 22% had heard a little.

The survey noted:

“52% support the CLARITY Act after a neutral description; 11% oppose. Support is bipartisan, and the persuadable middle is large.”

CLARITY Act support. Source: Harrisx

Digital asset familiarity remains uneven, though crypto ownership has become politically relevant. Harrisx found 39% of voters are familiar with digital assets and blockchain technology, while 61% are not. Still, two in five voters have purchased crypto at some point, and 30% bought crypto in the past year. The survey found familiarity and ownership are concentrated among men and voters under 35. Separately, 70% said the United States should already have passed clear cryptocurrency legislation, while 60% preferred federal legislation over case-by-case enforcement.

National Security Message Drives CLARITY Act Support

Offshore market structure added urgency to the findings. Only one-third of voters knew eight of the 10 largest cryptocurrency exchanges are based outside the United States. After learning that, 46% said crypto trading beyond U.S. oversight is at least somewhat problematic, while only 13% called it fine or good. The CLARITY Act would clarify whether the Securities and Exchange Commission (SEC) or the Commodity Futures Trading Commission (CFTC) oversees different digital assets. It would also create registration rules for exchanges and custodians and establish consumer protection standards for the digital asset industry.

The Harrisx report stated:

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“A 70% majority say the U.S. should already have passed clear cryptocurrency legislation, and 62% say it is important that the U.S. set the global rules for digital finance.”

National security ranked as the strongest argument for passing the legislation. Harrisx found 56% of voters said future digital payment systems built and controlled outside the United States would weaken U.S. national security. More than two in five voters said foreign-issued stablecoins becoming dominant would weaken the global role of the U.S. dollar. When asked which argument best supported CLARITY, 23% chose keeping the dollar and U.S. payment systems central to global finance. Law enforcement and illicit finance followed at 17%, while consumer protection and fraud prevention reached 16%.

Election findings gave the bill added political weight. Harrisx found 37% of voters would be more likely to support a senator who votes for CLARITY, while 17% would be less likely, creating a net 20-point benefit. The effect remained positive with Republicans, Democrats, and independents. Another 47% said they would consider voting outside their preferred party if that candidate supported CLARITY and their party did not. For the 2026 midterms, 52% said a candidate’s position on cryptocurrency regulation will be at least somewhat important to their vote. Among crypto owners, that figure rose to 78%.

The findings came as the U.S. Senate Banking Committee scheduled a May 14 executive session to consider the CLARITY Act. The markup was set to give lawmakers their first formal committee debate over the bill and determine whether it advances to the full Senate vote.

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Crypto industry squeezed by falling trading volume, tougher regulations – The Korea Times

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Crypto industry squeezed by falling trading volume, tougher regulations – The Korea Times

Bitcoin prices are displayed at the Bithumb Lounge in Seoul’s Gangnam District, March 4. Yonhap

The domestic cryptocurrency industry is grappling with mounting concerns over a market downturn as trading activity sharply weakens amid the ongoing stock market boom and as financial authorities move to tighten regulations, industry officials said Sunday.

According to data the Bank of Korea submitted to Rep. Cha Gyu-geun of the minor Rebuilding Korea Party, both domestic investors’ crypto holdings and transaction volumes have fallen by more than half over the past year.

The value of digital assets held by investors at the country’s five cryptocurrency exchanges — Upbit, Bithumb, Korbit, Coinone and Gopax — fell to 60.6 trillion won ($41.4 billion) at the end of February from 121.8 trillion won recorded at the end of January last year.

Average daily trading volume also fluctuated sharply during the period. After climbing to 17.1 trillion won in December last year, trading volume plunged to around 4.5 trillion won by the end of February this year.

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“The sharp drop in domestic cryptocurrency holdings appears to have been driven by both capital flowing into the strong local stock market and declines in crypto prices,” Hong Sung-wook, an analyst at NH Investment & Securities, said.

At the same time, the industry is bracing for tighter regulations as financial authorities prepare to implement revised rules under the Act on Reporting and Use of Specified Financial Transaction Information in August to strengthen anti-money laundering oversight.

Under the law, financial institutions and virtual asset service providers are required to comply with obligations such as customer identity verification and suspicious transaction reporting to prevent illicit activities, including money laundering and terrorist financing.

Industry officials are particularly concerned about a proposed rule requiring cryptocurrency transactions exceeding 10 million won involving overseas exchanges or private wallets to be automatically classified as suspicious and reported to the Financial Intelligence Unit.

Digital Asset eXchange Alliance (DAXA), which represents major domestic crypto exchanges, argued that the strengthened regulations could undermine market activity by placing excessive compliance burdens on the industry.

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“Applying a blanket suspicious transaction reporting requirement to all crypto transfers above 10 million won fails to reflect the unique nature of digital assets,” DAXA said in its report. “In the United States, transactions involving overseas crypto exchanges or private wallets are not automatically subject to additional reporting requirements. Instead, reporting obligations arise only when transactions above $2,000 are accompanied by clear signs of suspicious activity.”

The alliance has submitted a comment letter to the Ministry of Government Legislation on behalf of virtual asset service providers, urging authorities to reconsider the proposed amendments amid concerns they could further weaken market activity.

A representation of virtual cryptocurrency bitcoin / Korea Times photo by Shim Hyun-chul

A representation of virtual cryptocurrency bitcoin / Korea Times photo by Shim Hyun-chul

Debate over fairness is also intensifying over the government’s plan to introduce cryptocurrency taxation next year. The change would make cryptocurrency gains subject to a 22 percent tax, despite the removal of tax obligations for general equity investors following the repeal of the financial investment income tax in late 2024.

Park Soo-young of the main opposition People Power Party noted that authorities are currently capable of tracking transactions only at the country’s five won-based cryptocurrency exchanges.

“The policy could accelerate capital outflows to overseas trading platforms such as Binance,” he said.

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Oh Moon-sung, an adjunct professor at Kyung Hee University’s Graduate School of Business, argued that many of the reasons cited for abolishing the financial investment income tax, including concerns over weakening market activity and insufficient tax infrastructure, are equally relevant to the digital asset market.

“Applying taxes exclusively to cryptocurrency investments while excluding stock investments conflicts with the constitutional principle of equal taxation,” Oh said.

He added that cryptocurrency taxation should be postponed until critical conditions are in place, such as establishing clear tax guidelines for emerging digital asset transactions and building an integrated reporting system connecting domestic exchanges with the National Tax Service.

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