Avraham Eisenberg, infamous for his role in draining approximately $100 million from the decentralized exchange Mango Markets in 2022, has been sentenced to 52 months in prison on charges related to child sexual abuse material. This sentencing, handed down on May 1st at the US District Court for the Southern District of New York, is separate from the fraud charges stemming from the Mango Markets exploit.
The case involving child abuse material was filed in April 2024, following Eisenberg’s 2023 indictment on fraud charges related to the Mango Markets incident. He was initially scheduled to be sentenced in July 2024 after pleading guilty to the child porn charge. The judge considered consolidating the sentencing for both cases, but as of May 1st, the fraud sentencing remains pending.
The Mango Markets case has been closely watched as it highlights the increasing accountability for hackers and cybersecurity exploiters targeting the cryptocurrency industry. It serves as a reminder of the potential legal ramifications for those who engage in malicious attacks on crypto platforms and their users.
The Mango Markets Exploit: A Recap
Mango Markets, a now-former decentralized crypto exchange on the Solana blockchain, suffered a significant exploit in October 2022. The attack, orchestrated by Avraham Eisenberg, involved manipulating price oracles to drain approximately $100 million in user funds.
The exploit was achieved by artificially inflating the price of Mango perpetual futures contracts, allowing Eisenberg to borrow against the inflated value and subsequently drain the exchange’s liquidity pools. The native token of the exchange, Mango (MNGO), experienced a dramatic collapse in value, plummeting by 52% within 24 hours. This led to the suspension of deposits on the platform.
Eisenberg initially defended his actions, claiming that the $100 million was obtained through “legal open-market actions.” He also stated that he had negotiated a settlement for the return of some user funds after the exchange’s insurance fund proved insufficient to cover the losses.

Federal authorities arrested Eisenberg in Puerto Rico in December 2022, charging him with commodities fraud and commodities manipulation. In April 2024, a jury found Eisenberg guilty of wire fraud, commodities fraud, and commodities manipulation. His defense team argued that the exploit was a legitimate, albeit aggressive, trading strategy, but the jury ultimately disagreed.
Following the conviction, Eisenberg’s lawyers filed a motion for acquittal, arguing that the prosecution had failed to prove the elements of the crimes beyond a reasonable doubt. However, US prosecutors vehemently opposed the motion, asserting that Eisenberg had been properly convicted based on extensive evidence.
Key Takeaways:
- Avraham Eisenberg was sentenced to over four years in prison for possessing child sexual abuse material.
- This sentencing is separate from the fraud charges related to the Mango Markets exploit.
- The Mango Markets exploit involved manipulating price oracles to drain $100 million from the exchange.
- Eisenberg was found guilty of wire fraud, commodities fraud, and commodities manipulation in connection with the exploit.
- The case highlights the increasing scrutiny and legal ramifications for those who exploit vulnerabilities in the cryptocurrency industry.
What is a Price Oracle?
A price oracle is a mechanism that provides real-world price data to a blockchain, enabling smart contracts to interact with external market information. In the case of Mango Markets, the price oracle was used to determine the value of the perpetual futures contracts. Eisenberg exploited a flaw in how the oracle was implemented, allowing him to manipulate the price data and ultimately drain the exchange’s funds. Accurate and reliable price oracles are crucial for the security and functionality of decentralized finance (DeFi) platforms.
The Future of DeFi Security
The Mango Markets exploit serves as a cautionary tale for the DeFi industry. It underscores the importance of robust security measures, rigorous smart contract audits, and reliable price oracles. As the DeFi space continues to evolve, it is essential to prioritize security to prevent future exploits and protect user funds. This includes better design, incentivizing white hat hacking and improved risk management protocols.
The Importance of Regulation
The legal proceedings surrounding both the Mango Markets exploit and Eisenberg’s separate charges highlight the increasing regulatory scrutiny of the cryptocurrency industry. Governments and regulatory bodies around the world are grappling with how to regulate this emerging technology, and cases like this demonstrate the need for clear and effective regulations to protect investors and prevent illicit activity.