Crypto Hacks
Top 10 crypto hacks of 2016
In 2016, attackers took $136M in 5 crypto hacks and thefts. The biggest was Bitfinex on Aug 2, 2016, at $72M. The 5 largest account for 100% of the year's losses.
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The 5 biggest crypto hacks of 2016, ranked
1
Bitfinex
Aug 2, 2016CEXBitcoin$72MAn attacker compromised Bitfinex’s hot-wallet keys and used them to transfer about 119,755 BTC without authorization. Bitfinex halted trading and withdrawals while investigating.
2
The DAO
Jun 17, 2016DeFi ProtocolEthereum$60MThe attacker repeatedly called a withdrawal function before the DAO contract updated the account balance, taking 3.6 million ETH.
3
Gatecoin
May 14, 2016CEXEthereum$2MAttackers exploited a disruption during a server reboot to redirect deposits from cold storage—offline wallets—to a vulnerable hot wallet. Gatecoin lost approximately 250 BTC and 185,000 ETH.
4
Bitcurex
Oct 13, 2016CEXBitcoin$1.5MAttackers stole 2,300 BTC from Bitcurex, which shut down after the loss. The exchange later tried to restart but closed permanently weeks afterward.
5
ShapeShift
Apr 7, 2016CEXBitcoin$230KAn employee stole funds from ShapeShift, then sold security credentials to outside attackers who made further thefts. The report says customers lost no funds because the exchange did not hold customer assets.
