1939 hack event(s)
Description of the event: According to the official news from Youbi Exchange, Youbi has encountered heavy network-traffic DDoS attacks for three consecutive days since the platform coin subscription was launched on May 06, which caused the server to be inaccessible in a short time.
Amount of loss: - Attack method: DDoS Attack
Description of the event: -The official announcement of BitSG Exchange stated that its websites bitsg and app suffered from uninterrupted DDOS continues attacks, resulting in the inability to log in normally during certain periods.
Amount of loss: - Attack method: DDoS Attack
Description of the event: EOS gambling DApp suffered fake EOS attack
Amount of loss: 25,329.291 EOS Attack method: Fake EOS Vulnerability Attack
Description of the event: Hegic: There are 152.2 ETH (about 28,537 USD) permanently locked in the contract pool of unexercised put / call options. Out of the 19 contracts, 16 are put options (DAI is locked) and 3 are call options (ETH is locked). Hegic said it will process a 100% refund for all involved users.
Amount of loss: $28,537 Attack method: Unknown
Description of the event: DeFi lending protocol Lendf.Me was hacked.
Amount of loss: $24,696,616 Attack method: ERC777 Reentrancy Attack
Description of the event: The attacker used a reentrancy attack to steal funds (containing approximately 1,278 ETH) from Uniswap's ETH-imBTC Uniswap liquidity pool.
Amount of loss: 1,278 ETH Attack method: ERC777 Reentrancy Attack
Description of the event: Hacker Exploits Flaw in Decentralized Bitcoin Exchange Bisq to Steal $250K.
Amount of loss: $ 250,000 Attack method: Defects in the transaction agreement
Description of the event: Cocos-BCX has verified with the exchange, conducted internal investigations and concluded that asset loss and malicious selling that occurred are due to the malicious theft of the mapping wallet information. After verifying and confirming with the exchange, the total amount of stolen tokens this time was 1,087,522,819.2 COCOS, and the exchange confirmed that this total amount has been sold.
Amount of loss: 1,087,522,819.2 COCOS Attack method: Wallet Stolen
Description of the event: Attacker creates malicious Ledger Chrome extensions and tricks users into downloading malicious Ledger Chrome extensions through Google search ad serving and other methods to steal users' cryptocurrency. So far, it is known that at least 1.4 million XRP are stolen.
Amount of loss: 1,400,000 XRP Attack method: Phishing attack
Description of the event: Due to the congestion of Ethereum, the gas soared, and the liquidated ETH was sold at a price of 0 US dollars using the MakerDao auction loophole.
Amount of loss: $ 7,900,000 Attack method: Liquidation Mechanism Flaw
Description of the event: The crypto fund Trident Crypto Fund was hacked and the data of 266,000 users was leaked. The database containing email addresses, mobile numbers, encrypted passwords and IP addresses was uploaded to various file-sharing sites on February 20.
Amount of loss: - Attack method: Information Leakage
Description of the event: Josh Jones, founder of Bitcoin Builder and Mt.Gox's second largest creditor, has had $45 million worth of digital currency stolen.
Amount of loss: $45,000,000 Attack method: SIM card is hacked
Description of the event: bZx was attacked again with an estimated loss of $645,000 of ETH
Amount of loss: $645,000 Attack method: Oracle Attack
Description of the event: VBITEX platform was hacked, resulting in malicious manipulation of platform data and theft of virtual assets.
Amount of loss: - Attack method: Unknown
Description of the event: The FCoin exchange claimed that due to funding difficulties, the fund reserves could not be redeemed for user withdrawals, and the estimated amount of funds that could not be redeemed was between 7,000-13,000 BTC.
Amount of loss: - Attack method: Scam
Description of the event: DeFi lending protocol bZx exploited, may lose up to $350,000.
Amount of loss: $350,000 Attack method: Oracle Attack
Description of the event: IOTA has shut down its entire network this week after hackers exploited a vulnerability in the official IOTA wallet app to steal user funds.Estimated loss of 850000 MIOTA (valued at us $2.3 million).
Amount of loss: 8,550,000 MIOTA Attack method: Application Vulnerability
Description of the event: The Italian cryptocurrency exchange Altsbit was hacked. As of now, the value of stolen Bitcoin and Ether is about 70,000 U.S. dollars. The website stated that it will be closed after partial refund of client funds.
Amount of loss: $ 70,000 Attack method: Wallet Stolen
Description of the event: The hacker at the beginning of the TKnzni address continued to launch a transaction rollback attack on the LuckLambo104 contract address beginning with TGsyJF by creating an attack contract, and profited 6,588 TRX. The contract was created at 23:00 on February 01 and was attacked the day after it went live. The current contract balance has returned to zero.
Amount of loss: 6,588 TRX Attack method: Roll back attack
Description of the event: Last week, BTG encountered two 51% computing power attacks, and both recharge transactions to exchanges were cancelled, involving about 1,900 BTG and 5267 BTG, which was close to 90,000 US dollars.
Amount of loss: $ 90,000 Attack method: 51% attack