Original compilation: Leo, BlockBeats
Original compilation: Leo, BlockBeats
On November 22, the community discovered that a giant whale was trying to short Curve (CRV). The address shown as ponzishorter.eth borrowed a large amount of CRV through Aave mortgage for selling, and sold both on-chain and off-chain. 0.6 US dollars fell to around 0.4 US dollars. According to statistics, this address sold about 5% of the CRV circulation.
However, the Curve team quickly responded that because the position price was clear, it directly pulled CRV to the liquidation price of the giant whale, and eventually the giant whale liquidated its position, leaving a bad debt of 1.6 million US dollars in Aave.
This is not the first time that the address of ponzishorter has appeared in everyone's sight. Not long ago, the initiator of the Mango Market attack was also this address, which not only caused Mango to lose 100 million US dollars, but also stunned the community through the DAO attack. Subsequently, ponzishorter also tried to short USDT, but it has not been successful.
Continuous attacks and short-selling incidents have brought to the surface the giant whale who is the controller behind the ponzishorter address and has the pseudonym "Avraham Eisenberg". Who is Eisenberg? BlockBeats compiled an article about him from protos as follows:
Independent investigator Chris Brunet revealed (less than 24 hours after the attack) who was behind one of October's biggest losses, a Mango Markets manipulation of over $100 million, in a post accusing Avraham Eisenberg (self-proclaimed " Digital Art Dealer"), which includes a screenshot of a Discord conversation - account Avraham Eisenberg#5541 discussing details of the days leading up to the attack.
When another user prompted him to disclose the bug, he declined because he believed the program was too underfunded to pay out substantial bug bounties. In fact, after the attack, the hackers used the newly stolen funds to create and vote on a governance proposal that would reward them with a bounty of more than half of the hacked amount.
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This isn't the first time Eisenberg has been accused of DeFi breaches
In February, he was accused of misappropriating $14 million from Fortress DAO, a project he was responsible for developing. Eisenberg allegedly abused the project’s fund redemption mechanism to reallocate remaining funds to token holders when Fortress DAO ceased operations; in April, an address associated with a ponzishorter.eth account was used to manipulate the lending protocol Fuse's liquidation mechanism.
However, as Kleros founder Clment Lesaege said, Eisenberg's attempts to use a "decentralized arbitration protocol" to complete the claims process have not always been smooth sailing.
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Law Enforcement Always Left Behind
On-chain detective work is often a thankless task, and the sheer volume of shady activity related to cryptocurrencies, NFTs, and DeFi means disclosures are often quickly swamped.
There's nothing stopping a scammer from setting up a new on-chain address and Twitter profile, starting over with an alias. The technical knowledge necessary for law enforcement to take a claim seriously could also hinder bringing those responsible to justice, with some exceptions, and ZachXBT, a prominent "on-chain detective," has previously said that after his August revelations, a pair of French Crypto phishing scammers charged.
In Eisenberg's case, especially for a man who is clearly an expert in encryption, these oversights are relatively simple. And FTX claims to be investigating Mango Markets, and he may soon have the opportunity to test his convictions in court.
Eisenberg has contacted Protos following the Oct. 13 publication of the text to address the Mango Markets allegations and comments made by Kleros founder Clment Lesaege.
Regarding Mango Markets, Eisenberg tweeted adetailed statement：
In response to Lesaege's comments, he stated:
“In February of this year, Fortress DAO voted for a full redemption of the treasury. I helped implement this plan. By the end of March, the redemption plan has been completed, and any Fort token holder can withdraw and receive a corresponding proportional share of funds. "
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