Mango Markets exploiter arrested despite claiming all his actions were legal

A very close-up portrait of Avraham Eisenberg, who has curly red hair and a beardAvraham Eisenberg (attribution)
In October, an exploiter was able to manipulate collateral prices to extract tokens from the Mango Markets defi project, ultimately resulting in a $116 million loss for the project. The exploiter then tried to create a governance proposal in which he would agree to return some of the stolen funds in exchange for an agreement that the protocol would not try to freeze the tokens or pursue criminal charges.

It quickly became apparent that a man named Avraham Eisenberg was behind the exploit. In screenshots leaked from a conversation in a private Discord channel shortly before the attack, Eisenberg talked about the exploit he had planned. "I'm investigating a platform that could maybe lead to a 9 figure payday. Should I do it?" he wrote. When someone replied, "unles[s] it is highly illegal", Eisenberg responded: "Are there rules these days?" When someone suggested responsibly disclosing the vulnerability to the protocol, Eisenberg refused, saying the bug bounty was likely to be too small.

Eisenberg later owned up to the attack, tweeting a thread in which he wrote that he "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."

The feds apparently disagreed with his evaluation, and arrested Eisenberg in Puerto Rico on December 26. He is charged with commodities fraud and commodities manipulation.

Raydium exploit results in ~$5 million loss

An exploit on the Solana-based Raydium decentralized exchange project resulted in a total loss to the platform of $4.4 to $5.5 million. The attacker's actual spoils were less — somewhere around $2–3.5 million.

Raydium claims the exploit was a trojan attack, though they've provided no further evidence to substantiate this. According to Raydium, a trojan allowed an attacker to compromise the private key belonging to the pool owner account. With control over the private key, the attacker was able to withdraw a mix of assets from the pools. They bridged at least $2 million to Ethereum and tumbled them through Tornado Cash; another $1.5 million remained on the Solana chain, where some projects began freezing assets.

Raydium has offered a 10% "bug bounty" to the hacker if they return the stolen funds.

FTX-hosted NFTs break after website is redirected to a restructuring page

A Coachella NFT on the Magic Eden platform titled "Reflection '15 #47". The image for the NFT is a large grey square, because the image can't be loaded.Broken FTX NFT shown on an external NFT platform (attribution)
After FTX declared bankruptcy, the entire FTX.us domain was redirected to a page providing information on the bankruptcy proceedings.

However, NFTs that had been minted on the FTX platform relied on metadata from an API at that domain, meaning that the NFTs are now pointing to broken links. Owners of these NFTs can still see that the NFT exists, but images no longer work—even when viewing the NFTs in their own wallets, or when listing them for sale on other platforms.

Other projects that rely on the FTX NFT platform's API, such as the Coachella NFT project, also broke: the Coachella NFT platform shows 0 NFTs in existence. Those NFTs still show up where they are listed on external NFT platforms, although the images and metadata are broken.

Coachella NFTs stop working due to FTX collapse

A concert poster for Coachella 2015, featuring a bird with intricate feathers walking through a patch of plants and circus rides in a desertCoachella: Desert NFT (attribution)
Coachella partnered with FTX to sell a collection of NFTs in February, ultimately raking in around $1.5 million. The NFTs were paired with physical items — Coachella passes, art prints, and photo books — and the NFT owners had the option to "redeem" their NFT to receive the item. However, all of this was done through FTX, and with FTX no longer fully operational, redemptions are no longer possible. The FTX server storing the artwork for the NFTs was also intermittently available, so holders reported seeing broken images when going to view their NFT.

Ten of the NFTs in the collection came with lifetime passes to Coachella, and sold for six figures. Each year, the NFT holder has to go through the redemption process to obtain their festival pass.

Many of the token owners bought their NFTs with FTX and simply left them in their accounts on the platform. Some were able to transfer their tokens before FTX's NFT platform stopped operating, but many did not.

Oracle attack on Solend costs the project $1.26 million

Solend announced that an exploiter had manipulated the oracle price of an asset on their platform, allowing them to take out a loan that left the platform with $1.26 million in bad debt. They reported that they had paused affected pools, and did not anticipate other pools on the platform were at risk.

Mango Markets suffers loss of more than $116 million

Mango Markets, a Solana-based defi project offering borrowing, lending, and leverage trading, was exploited for $116 million. An attacker manipulated the supposed value of their collateral on the platform, allowing them to take out massive loans from the project treasury that they never repaid. In total, they stole around $116 million worth of Solana tokens. However, only a few exchanges have sufficient liquidity to support exchanging or withdrawing that quantity of tokens, and those exchanges (Coinbase, Binance, and Kraken) froze the attacker's wallets.

Mango Markets posted on Twitter to urge users not to deposit into the project, and asked the hacker to contact them "to discuss a bug bounty". The hacker had their own plans, instead submitting a governance proposal in which they would return $46 million of the stolen funds (keeping $70 million) in exchange for a promise that the protocol would not try to freeze the assets or pursue criminal charges. The hacker then used their 32 million governance tokens to vote in support, but ultimately were not able to get the proposal to pass. A different proposal with largely the same terms, but which left the attacker with only $47 million of the stolen funds, passed shortly after.

One misconfigured node apparently takes the entire Solana network offline

In the latest illustration of our marvelous new decentralized, resilient blockchain future, one single Solana node apparently was able to take down the entire Solana network. Solana outages are nothing new, and tend to end (as this one did) with Solana issuing instructions to the people who run their validators, asking them all to turn them off and on again.

A validator operator reported that "It appears a misconfigured node caused an unrecoverable partition in the network." It's a bit startling that, in a supposedly decentralized network, one single node can bring the entire network offline.

Helium ditches its blockchain

Helium is a network of wireless hotspots that decided to bolt on a cryptocurrency layer a few years after it was created. Through this, they hoped to convince people to spend hundreds of dollars on Helium hotspots, which earn an average of 0.07 HNT ($0.37) a day (2.1 HNT/$11.24 a month) for supplying connectivity to internet of things devices.

Now, Helium is ditching its custom Helium chain in favor of a Solana-based token, and scrapping the blockchain entirely for the portions of its service that actually used the blockchain for anything beyond handling rewards.

Helium seems to have realized, finally, that blockchains tend to be slow as hell. In a blog post about the change, they wrote that "specific transactions, including Proof-of-Coverage and Data Transfer Accounting, are processed on-chain unnecessarily. This data bottleneck can cause efficiency issues such as device join delays and problems with data packet communications, which bloats the Network and causes slow processing times." They outline their plans to move these portions of the project to a "more traditional large data pipeline" — that is, infrastructure that's actually well-suited to that kind of processing.

OptiFi developer accidentally closes the project contract, irretrievably locking $661,000

OptiFi, a derivatives defi project, accidentally and permanently shut down the project smart contract, irretrievably locking up $661,000 — the project's entire fund. A developer had been trying to push an update to the project, and ran into issues related to Solana network congestion (a recurring issue). While trying to clean up from a partially-executed transaction, the developer accidentally ran a command that closed the project's primary smart contract.

OptiFi has promised to return user deposits and settle all positions. In a post-mortem, they wrote that they had learned that "Every deployment needs a rigorous process and single point failure can be avoided. Please don't rush like what we did, especially for defi projects". They further outlined a "peer-surveillance approach" in which three people would be required to deploy any changes together. They also asked the Solana team to implement a two-step confirmation for such a potentially destructive command.

Whistleblower website alleges that the creators of the Avalanche blockchain paid lawyers to attack competitors

Kyle Roche sitting in a dim restaurant setting, speaking and gesturing. A caption on the video reads "I'm just a crazy motherfucker".Roche in one of the secretly recorded videos (attribution)
An anonymous whistleblower website called "CryptoLeaks" has alleged that Ava Labs, the company behind the Avalanche blockchain, paid lawyers to sue competitors and obtain confidential information through legal discovery. The site includes secretly recorded videos of Kyle Roche, a founding partner of the Roche Freedman law firm which has filed class action lawsuits against numerous companies including Solana, Binance, and others. In some of the surreptitiously recorded videos, Roche is visibly drunk.

"A pact was formed that involved Ava Labs granting Roche Freedman a massive quantity of Ava Labs stock and Avalanche cryptocurrency (AVAX), now worth hundreds of millions of dollars, in exchange for Roche Freedman agreeing to pursue a hidden purpose," the site claims.

The site does include video clips of Roche saying some surprising things, although the clips are very short and devoid of context. The whole thing should be taken with a grain of salt.

Ava Labs founder Emin Gün Sirer dismissed the claims on the site as "conspiracy theory nonsense". Roche published a statement about the " numerous unsourced false statements and illegally obtained, highly edited video clips that are not presented with accurate context", in which he said that his statements about filing class action suits at the behest of Ava Labs were "false, and were obtained through deceptive means, including a deliberate scheme to intoxicate, and then exploit me, using leading questions. The statements are highly edited and spliced out of context."

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