Crypto Hacks
Top 10 crypto hacks of 2018
In 2018, attackers took $2.33B in 84 crypto hacks and thefts. The biggest was BeautyChain on Apr 22, 2018, at $1B. The 10 largest account for 98% of the year's losses.
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The 10 biggest crypto hacks of 2018, ranked
1
BeautyChain
Apr 22, 2018TokenEthereum$1BAn integer overflow in BeautyChain’s batchTransfer function let attackers create an enormous number of BEC tokens, which they sent to two addresses and sold. Exchanges later halted BEC and SMT trading, limiting the loss.
2
Coincheck
Jan 26, 2018CEXNEM$534MAttackers stole customers’ NEM coins from Coincheck’s internet-connected hot wallet, which used a single key rather than requiring multiple approvals. The exchange began reimbursing affected customers.
Our coverage: CoinCheck Hacking Brings Consumer Protection To The ForeSource
3
Gate
Apr 21, 2018CEX$235MAttackers compromised Gate.io’s private keys and drained Bitcoin, Ethereum, Dogecoin, and other tokens from the exchange. The breach was not publicly revealed until 2024.
4
BitGrail
Feb 12, 2018CEXNano$170MA flaw in BitGrail’s withdrawal system let attackers withdraw the same funds repeatedly, stealing Nano from the exchange’s hot wallets.
5
SmartMesh
Apr 24, 2018TokenEthereum$140MAn integer-overflow flaw in SmartMesh’s transferProxy function let attackers create counterfeit tokens; some were traded on exchanges before trading was halted.
6
ZAIF
Sep 14, 2018CEXBitcoin$60MAttackers gained access to Zaif’s hot-wallet keys and stole Bitcoin, Bitcoin Cash, and MonaCoin. The Bitcoin Cash amount was not specified.
7
Blockchain.info
Feb 19, 2018$50MA hacking group used Google search ads for cryptocurrency-related terms to direct users to fake Blockchain.info websites, stealing more than $50 million in cryptocurrency.
8
Coinrail
Jun 10, 2018CEXEthereum$37.2MAttackers broke into Coinrail’s systems and stole more than $40 million in altcoins, including NPXS and Aston X. Partner exchanges helped recover about two-thirds of the stolen assets.
Our coverage: Bitcoin This Week: CFTC Subpoenas Major Crypto Exchanges, Coinrail Hacked, Bitcoin Prices And MoreSource
9
Bithumb
Jun 21, 2018CEXEthereum$31MAttackers gained access to Bithumb’s online wallet system and stole cryptocurrency, including about 35,000 ETH and other tokens.
10
Bancor
Jul 9, 2018DeFi ProtocolEthereum$23.5MAttackers gained access to a wallet linked to Bancor's BancorConverter contract, apparently using a compromised private key, and drained about $23.5 million in tokens.
