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USDC to USDT Swap Exploited with a $215k Loss, How Does MEV Attack Stablecoin Trades?
Original Article Title: Crypto trader gets sandwich attacked in stablecoin swap, loses $215K
Original Article Author: Brayden Lindrea, Cointelegraph Author
Original Article Translation: ChatGPT
Editor's Note: This article covers a sandwich attack incident that occurred in a cryptocurrency trade, where a trader lost over $215,000 during a stablecoin exchange. The article provides a detailed account of the attack, including how MEV bots profited through frontrunning and discusses potential money laundering activities. Additionally, it mentions the protective measures taken by the Uniswap platform to prevent such attacks and clarifies initial criticisms.
Below is the original content (slightly rephrased for better readability):
On March 12, a crypto trader fell victim to a sandwich attack while transferring $220,764 in stablecoins, losing nearly 98% of its value, amounting to $215,000, which was captured by a MEV bot.
A $220,764 USDC stablecoin value was swapped to $5,271 Tether USDT within 8 seconds, as the MEV bot successfully front-ran the transaction, profiting over $215,500 from it.
Data from the Ethereum block explorer shows that this MEV attack occurred in the USDC-USDT liquidity pool of the decentralized exchange Uniswap v3, with assets worth $19.8 million locked in the pool.
Details of the Sandwich Attack Transaction Source: Etherscan
According to Michael Nadeau, the founder of The DeFi Report, the MEV bot front-ran by swapping out all USDC liquidity from Uniswap v3's USDC-USDT pool and then putting it back after the transaction execution.
Nadeau stated that the attacker paid a $200,000 fee to the Ethereum block builder "bob-the-builder.eth" from the $220,764 transaction and pocketed $8,000 for themselves.
DeFi researcher "DeFiac" speculated that the same trader using different wallets may have experienced a total of six sandwich attacks, citing "internal tools" as evidence. They noted that all funds were sourced from the Aave lending protocol before being deposited into Uniswap.
Two wallets fell victim to MEV sandwich attacks around 9 a.m. UTC on March 12th. Ethereum wallet addresses "0xDDe…42a6D" and "0x999…1D215" were sandwich attacked in transactions that occurred three to four minutes apart, resulting in losses of $138,838 and $128,003, respectively.
These two traders conducted trades in the Uniswap v3 liquidity pool similar to a trader exchanging $220,762.
Speculation arose that these transactions might be related to money laundering.
0xngmi, the founder of the crypto data dashboard DefiLlama, stated, "If you have NK illicit funds, you can construct a transaction that is very easily exploited by MEV and privately send it to an MEV bot, allowing them to arbitrage in a bundle. This way, you can wash all the money with close to zero loss."
While Nadeau initially criticized Uniswap, he later acknowledged that these transactions did not originate from Uniswap's frontend, which has MEV protection and default slippage settings.
After Uniswap CEO Hayden Adams and others clarified the protective measures taken by Uniswap to prevent sandwich attacks, Nadeau retracted those criticisms.
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Never Underestimate the Significance of the US Stablecoin 'Infrastructure Bill'
If the US stablecoin bill, the "GENIUS Act," passes smoothly this time, its significance will be tremendous. I even think it's significant enough to enter the top five in Crypto history.
Although abbreviated as the GENIUS Act, which translates directly to the Genius Act, it is actually the Guiding and Establishing National Innovation for U.S. Stablecoins, which translates to "Guiding and Establishing National Innovation for US Dollar Stablecoins."
The proposal is lengthy, with several key points summarized for everyone:
· Mandatory 1:1 Full Asset Backing: Assets include cash, demand deposits, and short-term US Treasuries. At the same time, misappropriation and rehypothecation are strictly prohibited.
· High-Frequency Disclosure: Reserve reports must be published at least monthly, introducing external audits.
· Licensing Requirement: Once the circulating market cap of the issuer's stablecoin exceeds $100 billion, it must transition into the federal regulatory system within a specified timeframe, adopting banking-grade regulation.
· Introduction of Custody: The custodian of the stablecoin and its reserve assets must be a regulated qualified financial institution.
· Clear Definition as a Payment Medium: The bill explicitly defines stablecoin as a new type of payment medium, primarily regulated by the banking regulatory system, rather than restricted by the securities or commodities regulatory system.
· Embracing Existing Stablecoins: A maximum 18-month grace period after the bill's enactment, aimed at encouraging existing stablecoin issuers (such as USDT, USDC, etc.) to promptly obtain licenses or become compliant.
After finishing the main content, let's talk about the significance of this matter with an excited heart.
Over the years, when others asked, "After working in the Crypto industry for 16 years, what application have you created?"
In the future, you can confidently tell others—Stablecoins.
Some people have held opposing views. In the past, people's impression of stablecoins was that they were an opaque black box. Every few months, there would be FUD — whether Tether's assets were frozen or Circle had a significant black hole deficit.
In fact, if you think about it, Tether easily rakes in billions of dollars a year just from the interest on those underlying government bonds. Circle, slightly less, also made a $1.7 billion profit last year.
They basically made money while standing there. From a motivational standpoint, they have no malicious intentions. In fact, they are the most eager for compliance.
Now, this opaque black box will become a transparent white box.
In the past, the only complaint was that Tether's funds might have been frozen by the United States. Now, they will be directly placed into U.S. compliant custodial institutions, with high-frequency disclosures, so you can rest assured.
【No need to worry about a rug pull】 is such a huge advantage—I think especially all Crypto people understand this.
Stablecoins were once almost on the verge of being overtaken by CBDCs. In any country, if a central bank digital currency really exists, it is highly likely not built on a blockchain, at most it is built on some internal central bank consortium chain, which to be honest, is meaningless.
When CBDCs were at their peak, that was the most dangerous time for stablecoins.
If CBDCs had become a reality back then, stablecoins today would have been relentlessly suppressed into a dark corner, and blockchain would only be able to play a minimal role.
The remaining half-dead stablecoins would even have to learn the standards of central bank digital currencies, completely relinquishing their standard-setting power.
And now, stablecoins have won (or are about to).
Instead, everyone should learn the 【Blockchain + Token】 standard.
Nowadays, many blockchains actually have no meaningful applications on top, only stablecoin transfers. For example, with Aptos, the only scenario I use Aptos for is transfers between Binance and OKX.
And now, stablecoins will be legislated, what does that mean?
That's right, blockchain will become the only standard.
In the future, every stablecoin user will be the first to learn how to use a wallet.
As an aside, I actually think Ethereum's concerted push for EIP-7702 is quite forward-thinking. While other chains are all about memes, thank you Ethereum for sticking to account abstraction.
EIP-7702 is about Account Abstraction, which can support, for example:
· Social Account Registration Wallet
· Paying GAS with Native Coin
· And more
This paves the way for future new users to heavily use stablecoins, solving the last-mile problem.
Furthermore, once stablecoins receive legislative support, deposits and withdrawals will become even easier.
Let's imagine a scenario: previously, hindered by the gray nature of stablecoins, but after the bill passes, many traditional brokerages can support stablecoins themselves. The money from a US stock investor can be converted into stablecoins in minutes and instantly deposited into Coinbase. Believe it or not.
Let's imagine another scenario: if the brilliant bill smoothly passes through the House of Representatives, next, you will see:
Due to the extremely lucrative nature of this trading, existing stablecoin leaders and newly entering traditional giants will crazily start promoting their stablecoin products.
And an outsider, due to these promotions, will start using stablecoins. And then one day, after finding out that the wallet account has been created, will explore Bitcoin inside. Is mining Bitcoin difficult?
Stablecoins are a huge Trojan horse. The moment you start using stablecoins, you unwittingly step half a foot into the Crypto world.
As a large reservoir for digesting US debt, although stablecoins cannot directly absorb debt, they at least provide ammunition for the US debt secondary market. These functions are quite important, and slowly, stablecoins are becoming a part of the US debt market's body. Therefore, once the US legislation is passed and experiences the benefits, there is no turning back.
And, we are also confident that stablecoins are indeed one of the great innovations in our industry. People who have used stablecoins will find it hard to return to the traditional cash-banking system.
Once the bill is passed, users can't go back. In the future, concerns are about to be resolved, standards will be mastered, and the era of large deposits seems to be on the horizon.
Original Article Link
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HTX Research Latest Research Report丨Sonic: A Case Study of the New DeFi Paradigm
While the industry was still embroiled in the Layer 2 scaling debate, Sonic offered a new answer through a "foundational revolution." Recently, HTX Research released its latest research report "Sonic: A Blueprint for the DeFi New Paradigm," detailing the new public chain Sonic. While fully compatible with the EVM, Sonic has achieved a throughput of over 2000 TPS, 0.7-second transaction finality, and a transaction cost of 0.0001 USD, outperforming mainstream Layer 1 solutions and even surpassing most Layer 2 solutions. The performance-boosting Sonic is reshaping public chain infrastructure, officially ushering in the "sub-second era" of public chains.
As a high-performance public chain based on a Directed Acyclic Graph (aDAG), Fantom Opera initially stood out for its high throughput and fast confirmation capabilities. However, as the on-chain ecosystem expanded, the limitations of its traditional EVM architecture became increasingly apparent: state storage expansion, slow node synchronization, and constrained execution efficiency. To address this, Fantom introduced the new upgrade solution Sonic, aimed at achieving performance leaps through fundamental reconstruction without relying on sharding or Layer 2.
Led by the restructured Sonic Labs, Sonic's core development team brought together top industry talents, including CEO Michael Kong, CTO Andre Cronje (founder of Yearn Finance), and Chief Research Officer Bernhard Scholz. Over a period of two and a half years, the team comprehensively optimized from the virtual machine, storage engine to the consensus mechanism, ultimately creating the standalone new chain Sonic. While being EVM-compatible, Sonic has achieved over 2000 TPS, 0.7-second finality, $0.0001 transaction cost, a 90% improvement in storage efficiency, and reduced node synchronization time from weeks to within two days.
· SonicVM: The new virtual machine dynamically compiles EVM bytecode, caches high-frequency operations (such as SHA3 hashing), and pre-analyzes jump instructions, improving execution efficiency several times over to support high-throughput demands.
· SonicDB: Using a layered storage design, it separates real-time state (LiveDB) from historical data (ArchiveDB), compressing storage space by 90%, reducing node maintenance thresholds, and enhancing decentralization.
· Sonic Gateway: A Layer 2-like cross-chain bridge to Ethereum, balancing security and efficiency through a batch processing mechanism, supporting bi-directional asset migration, and seamless integration with the Ethereum ecosystem.
Sonic introduces its native token S, exchanged 1:1 with the old token FTM, undertaking functions such as gas payment and governance staking. Its innovative mechanisms include:
· Gas Fee Monetization (FeeM): Developers can receive up to 90% of transaction fee sharing, incentivizing ecosystem app innovation; non-FeeM apps have 50% of fees burned to deter inflation.
· Point Airdrop System: Users earn points (Passive/Activity Points and Gems) through holding tokens, participating in DeFi, or ecosystem interactions, redeemable for a total of 200 million S tokens, creating a "usage is mining" positive feedback loop.
During the market downturn in 2025, Sonic's on-chain TVL grew over 500% against the trend, with stablecoin volume surpassing $260 million, driven by high-leverage yield strategies:
· Silo v2 Recurring Borrowing: Pledge S tokens to borrow stablecoins, leverage up to 20x, capturing multiple points and spread yields.
· Euler+Rings Combination: Deposit USDC to mint overcollateralized stablecoin scUSD, leverage up to 10x, while receiving Sonic points and protocol airdrops.
· Shadow DEX Liquidity Mining: Provide liquidity for mainstream trading pairs, earning up to 169% APY and receiving a share of trading fees.
The ecosystem's future plans involve introducing Real World Asset (RWA) yields and off-chain payment scenarios, expanding through compliant asset backing and consumer app integration, establishing a sustainable stablecoin utility loop.
Sonic's core DEX, FlyingTulip, designed by Andre Cronje, integrates trading, lending, and leverage functions, with key technological breakthroughs including:
· Adaptive AMM Curve: Combining Curve V2's liquidity aggregation advantage, introducing external oracle monitoring of volatility, dynamically adjusting the curve shape—close to a constant-product curve during low volatility (low slippage), and approaching a constant-product curve during high volatility (preventing liquidity depletion), reducing impermanent loss by 42%, and improving capital efficiency by 85%.
· Dynamic LTV Lending Model: Drawing inspiration from Curve's LLAMA liquidation mechanism but dynamically adjusting the loan-to-value (LTV) ratio based on market volatility. For example, the ETH collateral loan-to-value ratio can plummet from 80% during calm periods to 50% during volatile periods, reducing systemic risk.
With its triple advantage of "high performance + nested yield + low threshold," Sonic is expected to exceed $2 billion in TVL within 12 months, and its token S may impact billions of dollars in market capitalization. Its model has established a new paradigm for the industry: replacing liquidity speculation with on-chain efficiency and real returns, potentially triggering a fundamental shift in the logic of public chain competition.
Potential risks are concentrated at the technical level, including the Adaptive AMM relying on an external oracle, which could result in liquidity pool anomalies if the price feed is attacked. High-leverage strategies face liquidation risks during extreme market conditions and require hedging tools (such as perpetual contract shorts) to manage volatility.
From a macro perspective, Sonic is poised to be the dark horse in the 2025 DeFi revival wave, with the success of its stablecoin ecosystem creating broad upside potential for the ecosystem token S and overall network value. Sonic's rise validates a key proposition: even in a bear market, through mechanism innovation and performance breakthroughs, DeFi can still build a "yield fortress" to attract rational capital for long-term retention. Its nested yield model, developer incentive system, and efficient infrastructure provide the industry with a reusable template. If successfully integrated with RWAs and payment scenarios, Sonic may become a bridge connecting on-chain yield with real economic demand, propelling DeFi into a new stage of mass adoption.
To read the full report, please visit: https://square.htx.com/wp-content/uploads/2025/04/HTX-Research-Latest-Report.pdf
HTX Research is the dedicated research arm of HTX Group, responsible for in-depth analysis of a wide range of areas including cryptocurrency, blockchain technology, and emerging market trends. HTX Research produces comprehensive reports, offers professional evaluations, and is committed to providing data-driven insights and strategic foresight. It plays a key role in shaping industry perspectives and supporting informed decision-making in the digital asset space. With rigorous research methods and cutting-edge data analysis, HTX Research always remains at the forefront of innovation, driving industry thought leadership and facilitating a deep understanding of the evolving market dynamics.
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Never Underestimate the Significance of the US Stablecoin 'Infrastructure Bill'
If the US stablecoin bill, the "GENIUS Act," passes smoothly this time, its significance will be tremendous. I even think it's significant enough to enter the top five in Crypto history.
Although abbreviated as the GENIUS Act, which translates directly to the Genius Act, it is actually the Guiding and Establishing National Innovation for U.S. Stablecoins, which translates to "Guiding and Establishing National Innovation for US Dollar Stablecoins."
The proposal is lengthy, with several key points summarized for everyone:
· Mandatory 1:1 Full Asset Backing: Assets include cash, demand deposits, and short-term US Treasuries. At the same time, misappropriation and rehypothecation are strictly prohibited.
· High-Frequency Disclosure: Reserve reports must be published at least monthly, introducing external audits.
· Licensing Requirement: Once the circulating market cap of the issuer's stablecoin exceeds $100 billion, it must transition into the federal regulatory system within a specified timeframe, adopting banking-grade regulation.
· Introduction of Custody: The custodian of the stablecoin and its reserve assets must be a regulated qualified financial institution.
· Clear Definition as a Payment Medium: The bill explicitly defines stablecoin as a new type of payment medium, primarily regulated by the banking regulatory system, rather than restricted by the securities or commodities regulatory system.
· Embracing Existing Stablecoins: A maximum 18-month grace period after the bill's enactment, aimed at encouraging existing stablecoin issuers (such as USDT, USDC, etc.) to promptly obtain licenses or become compliant.
After finishing the main content, let's talk about the significance of this matter with an excited heart.
Over the years, when others asked, "After working in the Crypto industry for 16 years, what application have you created?"
In the future, you can confidently tell others—Stablecoins.
Some people have held opposing views. In the past, people's impression of stablecoins was that they were an opaque black box. Every few months, there would be FUD — whether Tether's assets were frozen or Circle had a significant black hole deficit.
In fact, if you think about it, Tether easily rakes in billions of dollars a year just from the interest on those underlying government bonds. Circle, slightly less, also made a $1.7 billion profit last year.
They basically made money while standing there. From a motivational standpoint, they have no malicious intentions. In fact, they are the most eager for compliance.
Now, this opaque black box will become a transparent white box.
In the past, the only complaint was that Tether's funds might have been frozen by the United States. Now, they will be directly placed into U.S. compliant custodial institutions, with high-frequency disclosures, so you can rest assured.
【No need to worry about a rug pull】 is such a huge advantage—I think especially all Crypto people understand this.
Stablecoins were once almost on the verge of being overtaken by CBDCs. In any country, if a central bank digital currency really exists, it is highly likely not built on a blockchain, at most it is built on some internal central bank consortium chain, which to be honest, is meaningless.
When CBDCs were at their peak, that was the most dangerous time for stablecoins.
If CBDCs had become a reality back then, stablecoins today would have been relentlessly suppressed into a dark corner, and blockchain would only be able to play a minimal role.
The remaining half-dead stablecoins would even have to learn the standards of central bank digital currencies, completely relinquishing their standard-setting power.
And now, stablecoins have won (or are about to).
Instead, everyone should learn the 【Blockchain + Token】 standard.
Nowadays, many blockchains actually have no meaningful applications on top, only stablecoin transfers. For example, with Aptos, the only scenario I use Aptos for is transfers between Binance and OKX.
And now, stablecoins will be legislated, what does that mean?
That's right, blockchain will become the only standard.
In the future, every stablecoin user will be the first to learn how to use a wallet.
As an aside, I actually think Ethereum's concerted push for EIP-7702 is quite forward-thinking. While other chains are all about memes, thank you Ethereum for sticking to account abstraction.
EIP-7702 is about Account Abstraction, which can support, for example:
· Social Account Registration Wallet
· Paying GAS with Native Coin
· And more
This paves the way for future new users to heavily use stablecoins, solving the last-mile problem.
Furthermore, once stablecoins receive legislative support, deposits and withdrawals will become even easier.
Let's imagine a scenario: previously, hindered by the gray nature of stablecoins, but after the bill passes, many traditional brokerages can support stablecoins themselves. The money from a US stock investor can be converted into stablecoins in minutes and instantly deposited into Coinbase. Believe it or not.
Let's imagine another scenario: if the brilliant bill smoothly passes through the House of Representatives, next, you will see:
Due to the extremely lucrative nature of this trading, existing stablecoin leaders and newly entering traditional giants will crazily start promoting their stablecoin products.
And an outsider, due to these promotions, will start using stablecoins. And then one day, after finding out that the wallet account has been created, will explore Bitcoin inside. Is mining Bitcoin difficult?
Stablecoins are a huge Trojan horse. The moment you start using stablecoins, you unwittingly step half a foot into the Crypto world.
As a large reservoir for digesting US debt, although stablecoins cannot directly absorb debt, they at least provide ammunition for the US debt secondary market. These functions are quite important, and slowly, stablecoins are becoming a part of the US debt market's body. Therefore, once the US legislation is passed and experiences the benefits, there is no turning back.
And, we are also confident that stablecoins are indeed one of the great innovations in our industry. People who have used stablecoins will find it hard to return to the traditional cash-banking system.
Once the bill is passed, users can't go back. In the future, concerns are about to be resolved, standards will be mastered, and the era of large deposits seems to be on the horizon.
Original Article Link
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