Mango Markets: "Highly Profitable Strategy" — How a $114M Exploiter Overturned His Conviction

1. Two $5 Million Deposits and the CFTC Complaint’s $114 Million Figure

On October 11, 2022, Avraham Eisenberg funded two anonymous Mango Markets accounts with about five million USDC each—about $10 million in all. In roughly thirty minutes, he took both sides of MNGO Perpetuals, bought MNGO on the three exchanges feeding Mango’s oracle, and borrowed against the resulting positions; the CFTC complaint puts the withdrawals at $114 million, virtually all the platform’s available liquidity. A jury later convicted him on three counts, but in May 2025 the trial judge vacated the commodities convictions for insufficient venue evidence and said it would enter a judgment of acquittal on wire fraud for insufficient falsity evidence—without finding the conduct lawful.^[5][1][3]

One account sold MNGO Perpetuals while the other bought them, leaving Eisenberg on both sides. He then bought MNGO on FTX, AscendEX and Serum, the oracle’s three feeds. The CFTC complaint alleges that the oracle price rose more than 13-fold in thirty minutes, from about $0.04 to $0.54; trial evidence showed reference prices rising 700 percent in fourteen minutes.^[1][5][4]

The CFTC's complaint says a $19 million position was carried at an artificial value above $200 million; Eisenberg borrowed against it — USDC, Tether, bitcoin, ether — sold MNGO on the same exchanges to crater the price and lift his short position, then borrowed again. Exhibits trace his withdrawals from 6:29 to 6:57 that evening.^[5][1]

The CFTC complaint alleges that MNGO then fell to roughly $0.02, below its $0.04 starting point. Mango Markets was insolvent and suspended operations; depositors could not withdraw. A user in Poughkeepsie, New York, failed to withdraw that evening—a fact prosecutors later invoked to support Manhattan venue.^[5][1]

2. "A Highly Profitable Trading Strategy"

Six days before the drain, in a private Discord chat reported by an independent journalist and quoted in the CFTC complaint, he floated the plan:^[5]

I’m investigating a platform that could maybe lead to a 9 figure payday. Should I do it.^[5]

— Avraham Eisenberg, Discord message of October 5, 2022, as reported by an independent journalist and quoted in the CFTC complaint

Four days after the exploit, he went public. His October 15, 2022 posts, consolidated in the CFTC complaint, gave the case its lasting label:^[5]

I was involved with a team that operated a highly profitable trading strategy last week. I believe all of our actions were legal open market actions, using the protocol as designed, even if the development team did not fully anticipate all the consequences of setting parameters the way they are.^[5]

— Avraham Eisenberg, tweet of October 15, 2022, as quoted in the CFTC complaint

3. The DAO's Non-Prosecution Bargain

The negotiation was a governance vote. On October 12, 2022, Eisenberg proposed to the Mango DAO that he return about $51 million and keep roughly $65 million as a "bug bounty"; a revised version — return about $67 million, keep $47 million — was approved by token holders on October 13, per the CFTC's complaint. It carried a condition prosecutors would quote for years: Mango would "not pursue any criminal investigations or freezing of funds."^[5][4]

The bounty framing, on the CFTC's telling, fit none of Mango's own rules: published criteria capped bounties at 10 percent of what a vulnerability could have stolen, up to $1 million, and excluded flaws the reporter had already exploited. Eisenberg returned about $67 million in USDC and Solana, kept about $47 million in various assets, and Mango added $25 million from its treasury to compensate affected users.^[5][4]

Inside the protocol, the vote carried weight; outside it, none — proven within ten weeks. The DAO had promised away, on paper, a prosecution it could not stop; the CFTC called the arrangement "an attempt to evade liability," and Eisenberg was arrested in San Juan on December 26, 2022.^[4][3]

The platform never recovered. In September 2024, the SEC announced a settlement of its allegations with Mango DAO, Blockworks Foundation and Mango Labs. Without admitting or denying the allegations, the respondents agreed to pay $700,000 and destroy their MNGO tokens. In January 2025, the DAO held a shutdown vote.^[9][10]

4. Guilty on All Three Counts — Then the Verdicts Fell

The criminal complaint was unsealed December 27, 2022. A three-count indictment and the CFTC action were filed January 9, 2023; the SEC action followed January 20. Eisenberg appeared in Manhattan federal court February 2. The CFTC called its case the first enforcement action over oracle manipulation on a decentralized platform, while the SEC alleged that MNGO was offered and sold as a security and that Eisenberg manipulated it to obtain about $116 million.^[3][4][6]

After a nine-day trial, on April 18, 2024, the jury convicted Eisenberg, then 28 and living in Puerto Rico, on all three counts. DOJ called it the first U.S. prosecution involving cryptocurrency manipulation through open-market trades. Sentencing was set for July but did not occur; his lawyers moved to overturn the verdicts.^[2][1]

When the ruling came on May 23, 2025, it gutted the case. The two commodities convictions were vacated because the government never proved the essential conduct touched Manhattan — Eisenberg ran the entire scheme online from Puerto Rico. The wire-fraud count failed on something deeper: Mango at the time had no terms and conditions at all, no rules about manipulation or borrowing, nothing beyond "use at your own risk," and its code simply liquidated undercollateralized accounts.^[1]

There was just the word “borrow.” That word could have been “Access Collateral,” “Utilize Assets,” or anything else for that matter.^[1]

— Judge Arun Subramanian, Opinion and Order, United States v. Eisenberg, No. 23-cr-10 (AS) (S.D.N.Y., May 23, 2025)

The platform automatically measured the real value of his collateral, the judge reasoned, so Eisenberg never stated anything untrue. The same opinion still found sufficient evidence that MNGO Perpetuals were regulated swaps and that Eisenberg intended to manipulate their price, denied a new trial, and quoted Supreme Court precedent that a venue-based reversal "plainly does not resolve the bottom-line question of criminal culpability." This was not a finding of innocence.^[1]

5. The Appeal and the Separate Sentence

Prosecutors appealed. According to DL News, their December 22, 2025 brief argued that the judge “ignored critical evidence,” that “borrow” conveys intent to repay, and that the ruling “would unsettle traditional understandings of fraud.”^[8]

Eisenberg’s convictions on counts one and two are vacated. The Court will enter a judgment of acquittal on count three.^[1]

— Judge Arun Subramanian, conclusion of the May 23, 2025 Opinion and Order, United States v. Eisenberg

In a separate case unrelated to the Mango conduct, Eisenberg pleaded guilty to possessing child sexual abuse material and was sentenced on May 1, 2025 to 52 months in prison. DL News reported that the material was discovered when he was arrested in connection with the Mango case.^[7][8]

The record remains divided. Eisenberg acknowledged involvement while claiming the trades were legal. Mango DAO agreed to the SEC settlement and voted on shutdown proposals; DL News reported that two of three passed. A jury found fraud, while the judge found no false statement for wire fraud and insufficient Manhattan venue for the commodities counts. Prosecutors appealed.^{[1][5][10][8]}