362 hack event(s)
Description of the event: Yearn v1 yDAI vault was attacked and the attackers stole 2.8 million US dollars. Banteg, the core developer of Yearn finance, subsequently stated that the attacker received 2.8 million US dollars and vault lost 11 million US dollars.
Amount of loss: $ 11,000,000 Attack method: Flash loan attack
Description of the event: The DeFi insurance project ArmorFi has paid a $1.5 million bug bounty to the white hat hacker Alexander Schlindwein. Because the hacker discovered a "critical loophole" in the agreement, and may cause all the company's underwriting funds to be depleted.
Amount of loss: - Attack method: Contract Vulnerability
Description of the event: Weibo user “CryptoBlanker” broke the news: the refi.finance project party directly used the reserved setBoardroom() function to change the Boardroom address to the address it deployed. Light BAS was taken away 2,600, worth 111 ETH (about 144,000 US dollars).
Amount of loss: 111 ETH Attack method: Rug Pull
Description of the event: On January 27, 2021, SushiSwap was attacked again. This attack took advantage of the fact that DIGG itself did not have a WETH trading pair, and the attacker created this trading pair and manipulated the initial transaction price, resulting in a huge slippage during the fee exchange process. The attacker only needs to use a small amount of DIGG and WETH provide initial liquidity to obtain huge profits.
Amount of loss: 81 ETH Attack method: Price Manipulation
Description of the event: Twitter netizens said that due to a loophole in the award contract, the coverage agreement lost $3 million. Conversion, the data on the chain shows that attackers (0xf05Ca...943DF) have used the cover contract to issue a total of about 10,000 COVER, and have replaced them with assets such as WBTC and DAI. Later, the blockchain browser showed that the attacker (address label Grap Finance: Deployer) who made a profit of 3 million US dollars by issuing additional COVER returned 4350 ETH to the address labelled YieldFarming.insure: Deployer. CoverProtocol officially tweeted announcing that it will provide a new COVER token based on the snapshot before the breakthrough was repeated. And the 4350 ETH returned by the attacker will also be returned to LP token holders through snapshot processing.
Amount of loss: $ 3,000,000 Attack method: Contract Vulnerability
Description of the event: DeFi portal DefiPrime said on Twitter this morning that at 06:34 on December 18th, Beijing time, the liquidity LP token mortgage loan DeFi agreement Warp Finance suffered a lightning loan attack and about 8 million US dollars were stolen. In addition, Warp Finance officials also tweeted that they are investigating illegal stablecoin loans that were lent in the last hour, and recommend not to deposit stablecoins until the official finds out the violation.Afterwards, Warp Finance issued a statement regarding the lightning loan attack. It is said that lightning loan attackers can steal up to US$7.7 million worth of stablecoins, but the Warp Finance team has formulated a plan to recover approximately US$5.5 million worth of stablecoins still in the mortgage vault. The US$5.5 million will be The proportion is distributed to users who have suffered losses.
Amount of loss: $ 7,700,000 Attack method: Flash loan attack
Description of the event: According to reports, DeTrade Fund was the biggest scam on Friday, the platform allowing any user to profit by putting money into its arbitrage system and defrauding more than 1,400 ETH raised in a pre-sale. Twitter user Artura discovered that DeTrade Fund is actually run by a Lithuanian. Shortly after Artura’s tweet, the scam’s affiliate addresses distributed hundreds of ETH to presale participants, returning around 65-70% of the initial stolen funds.
Amount of loss: $ 1,200,000 Attack method: Scam
Description of the event: At 3:00 pm on December 1st, Beijing time, the security technical team discovered through Skynet that the Compounder.Finance project located at the address of 0x0b283b107f70d23250f882fbfe7216c38abbd7ca has undergone multiple large-value transactions. After verification, it was found that these transactions were internal operations of Compounder.Finance project owners, transferring a large number of tokens to their own accounts. According to statistics, Compounder.Finance eventually lost a total of about 80 million yuan worth of tokens.
Amount of loss: $ 80,000,000 Attack method: Project owner internal operations
Description of the event: DeFi asset mortgage platform Saffron Finance issued an announcement stating that Epoch 1 redemption errors caused by contract loopholes resulted in 50 million DAI deposits deposited by Epoch 1 being locked for 8 weeks. The team is currently working on an emergency fix to solve this problem and will transition to Epoch 2. Saffron Finance is a DeFi asset mortgage platform released by an anonymous team. The token is SFI, allowing liquidity providers to select customized risk exposures to obtain returns. In each cycle, users can choose different risk-return combinations (A, AA, S) on Saffron to provide liquidity. A cycle of 14 days (LP locks within 14 days). After the cycle ends, users can remove liquidity and obtain Interest and prorated SFI.
Amount of loss: $ 50,000,000 Attack method: Contract Vulnerability
Description of the event: The liquidity mining project SushiSwap (SUSHI) community governor 0xMaki announced in the Discord group that the SushiSwap vulnerability has been fixed, and the lost funds (approximately US$10,000) will be compensated from the SUSHI asset library. Previously, SushiSwap was attacked by a liquidity provider. The attacker obtained between 10,000 and 15,000 US dollars in a transaction. However, after this operation was discovered by 0xMaki, 0xMaki sent a transaction to the attacker with a message saying "I found you and we are working hard to fix it. Contact me on Discord to get bug bounty-0xMaki". According to analysis, the attacker uses SLP and WETH to create a new token pool, uses SLP1 of the new token pool to convert in Sushi Maker, and uses a small amount of SLP to transfer all SLPs in the Sushi Maker contract to the tokens they created. In the pool, all the handling fees of the corresponding transaction pair within a period of time will be collected into the bag. Repeat this process for other trading pairs and continue to make profits.
Amount of loss: $ 15,000 Attack method: Price Manipulation
Description of the event: DeFi robo-advisor Rari Capital released an official Twitter saying that contract vulnerabilities have been fixed with the cooperation of Quantstamp and no funds have been lost. Previously, due to loopholes in the RGT Distributor contract, RGT token application and deposit and withdrawal operations have been suspended. Rari Capital is currently reviewing the code update to confirm that there are no other vulnerabilities in the entire code.
Amount of loss: - Attack method: Contract Vulnerability
Description of the event: Compound's price feed error caused the liquidation of $90 million in assets. According to DeBank founder, the huge liquidation of Compound was caused by the dramatic fluctuations in the DAI price of the oracle information source Coinbase Pro. It is a typical oracle attack to manipulate the information source that the oracle relies on to perform short-term price manipulation to achieve misleading prices on the chain.
Amount of loss: - Attack method: Oracle Attack
Description of the event: Ethereum DeFi project Pickle Finance was attacked, losing about 20 million DAI. According to SlowMist analysis, the attacker completes an attack by forging the contract addresses of _fromJar and _toJar when calling the swapExactJarForJar function in the Controller contract, and then transferring the fake currency in exchange for the real DAI in the contract. SlowMist indicates that the swapExactJarForJar function in Pickle Finance's Controller contract allows two arbitrary jar contract addresses to be passed in for token exchange. Among them, _fromJar, _toJar, _fromJarAmount, and _toJarMinAmount are all variables that users can control. Attackers use this feature, fill in both _fromJar and _toJar with their own addresses, and _fromJarAmount is the amount of DAI set by the attacker to extract the contract, about 20 million DAI.
Amount of loss: $ 20,000,000 Attack method: Fake currency for real currency
Description of the event: On November 18th, an attacker exploited the vulnerability to obtain $100,000 in MPH tokens. After that, 88mph discovered a vulnerability in MPHinter, the MPH token minting contract, which could allow a potential attacker to steal all ETH in the Uniswap fund pool. With the help of the well-known white hat samczsun, ETH has been withdrawn into the governance multi-signature, so all funds are safe. In addition, 88mph stated that because the attacker put $100,000 in the LP pool (liquidity fund pool), the funds have been transferred to the governance wallet, and they have decided to allocate these funds to generations including MPH and ETH. Coin holders.
Amount of loss: - Attack method: Contract Vulnerability
Description of the event: Matthew Liu, co-founder of Origin Protocol (OGN), a decentralized sharing economy protocol, wrote an article to disclose the details of the lightning loan attack on the US dollar stable currency Origin Dollar (OUSD). So far, the attack has caused about 7 million U.S. dollars in losses, including more than 1 million U.S. dollars deposited by Origin and its founders and employees. Currently, Origin is determining the cause of the vulnerability and whether it can recover the funds. Origin reminded, "Vault deposits are currently disabled. Please do not purchase OUSD on Uniswap or Sushiswap."
Amount of loss: $ 7,000,000 Attack method: Flash loan attack
Description of the event: The Value DeFi protocol was attacked by a flash loan on Saturday. It is reported that the attacker borrowed 80,000 ETH from the Aave protocol, executed a lightning loan attack, and arbitrage between DAI and USDC. After the attacker used $7.4 million DAI, he refunded $2 million to Value DeFi and retained $5.4 million. In addition, the attacker left a mocking message to the Value DeFi team: "Do you really understand lightning loans?" Value DeFi claimed on Twitter on Friday that it has the function of preventing lightning loan attacks. After inquiry, the tweet no longer exists. Subsequently, the Value DeFi team tweeted to confirm that its MultiStables vault had been subjected to "a complex attack with a net loss of 6 million US dollars.
Amount of loss: $ 6,000,000 Attack method: Flash loan attack
Description of the event: Cheese Bank, a decentralized autonomous digital banking platform based on Ethereum, suffered a loss of USD 3.3 million due to a hacker attack. Hackers conducted a series of malicious lending operations on platforms such as dYdX and Uniswap by using automatic market maker (AMM)-based oracles, resulting in a total loss of over US$3.3 million, including US$2 million in USDC.
Amount of loss: $ 3,300,000 Attack method: Flash loan attack
Description of the event: DeFi lending platform PercentFinance wrote in a blog on November 4 that some currency markets encountered problems that could cause users' funds to be permanently locked. The team frozen currency markets specifically for USDC, ETH, and WBTC. A total of 446,000 USDC, 28 WBTC and 313 ETH have been frozen, valued at approximately US$1 million. The article stated that half of these fixed funds belonged to PercentFinance's "community improvement team." Withdrawals in other markets have already begun, but the team urges users not to borrow money from any of PercentFinance's markets during this period. It is reported that PercentFinance is a fork of Compound Finance.
Amount of loss: $ 1,000,000 Attack method: Unknown
Description of the event: Cointelegraph reported that on November 2, a project called Axion Network launched the token AXN and was hacked a few hours after it was hacked. 79 billion AXN were minted and sold to the market. The token price was almost zero. The hacker made a profit of 1,300 ETH, or about $500,000.
Amount of loss: $ 500,000 Attack method: Using the unstake function of the Axion Staking contract, we managed to mint approximately 80 billion AXN tokens
Description of the event: Recently, AlonGal, the chief technology officer of the cybercrime intelligence company HudsonRock, tweeted that on October 27, the EtherCrash cold wallet that claimed to be "the most mature and largest gambling game in Ethereum" was stolen, with a loss of about 2.5 million U.S. dollars. for. It is reported that EtherCrash has issued a notice on Discord in which it mentioned that the EtherCrash cold wallet was stolen and there were two large withdrawals. EtherCrash stated that it will compensate users for their property losses, but it will take some time because the losses are more serious.
Amount of loss: $ 2,500,000 Attack method: Wallet Stolen