SUSHI and YFI Price Manipulation on dYdX v3 Revealed

The recent dYdX v3 incident involving significant price movements on SUSHI and YFI tokens, raised critical concerns in the crypto community. This incident was characterizes through a sophisticated attempt to manipulate market prices, leading to significant financial impact and sparking debates about market integrity and security measures in decentralized finance (DeFi).

Understanding the incident

The Attack Strategy: The attacker, using over 100 wallet addresses, deposited approximately $5.3 million and basically took leveraged (5x) long positions in SUSHI-USD on dYdX v3. This was followed by a 180% jump in the price of SUSHI and similar strategies were used in the YFI-USD market. Initial deposits for these activities were approximately $16 million.

Market Manipulation: Addresses linked to the attacker bought large amounts of SUSHI and YFI on various platforms, causing significant price spikes. The attacker repeatedly withdraws unrealized profits and reinvests them, thereby expanding his positions.​​​​

Price Impact: The price of $YFI, for example, jumped by approximately 215%, and after these activities, the price of SUSHI remained stable above $1, while YFI experienced a significant price collapse, leading to large liquidation events​​​​.

Financial implications and reactions

Insurance Fund Use: Around $9 million of dYdX v3’s insurance fund, roughly 40% of its total v3 funds, was used to handle liquidations resulting from this attack.

Legal and Enforcement Actions: dYdX Trading Inc. explores legal remedies against the attacker and assists law enforcement in their investigations. The identity of the attacker has been revealed and the team is committed to taking all necessary legal action.​​​​

Operational Fixes: dYdX implemented risk control updates, including revised margining in less liquid markets and improved open interest monitoring. These measures are intended to prevent similar manipulative behavior in the future.

Concerns about the ethics and integrity of the market

Ethical Implications: Although the practices used by the attacker are not illegal, they are unethical, distort market prices and negatively impact regular traders. This incident calls into question the integrity of pricing on platforms like dYdX and highlights the need for improved protections against market abuse.

Centralized vs. Decentralized Management: Criticism has been raised about the lack of decentralized management in dealing with the incident. However, it is noted that this attack was performed on dYdX v3, where the order book and matching remain centralized​​.

Security landscape for 2023

In contrast to this targeted attack, the broader crypto and Web3 ecosystem faced a host of security challenges in 2023. According to a report by Blockchain.News, the sector witnessed 751 incidents with a cumulative loss of $1.84 billion, marking a 51% decline from 2022. It should be noted that the ten costliest incidents alone caused $1.11 billion in losses. This data highlights the prevalence of vulnerabilities in major chains such as BNB Chain and Ethereumwith private key compromises being an important attack vector.

The third quarter of 2023 proved particularly turbulent, witnessing $799 million in losses across 35 incidents, mainly due to security breaches affecting multiple chains. These incidents reveal an ongoing challenge in achieving cross-chain interoperability, a critical aspect for the future growth and institutional adoption of blockchain technology.


The SUSHI and YFI incident on dYdX v3 serves as a stark reminder of the vulnerabilities present in the growing DeFi space. It highlights the need for robust risk management strategies, enhanced market surveillance and the importance of ethical trading practices to ensure the integrity and stability of crypto markets. This incident not only highlights the ingenuity of attackers in exploiting market mechanisms, but also the ongoing challenges DeFi platforms face in balancing decentralization with effective governance and security measures.

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