Decentralized finance (defi) protocol Akropolis was on Thursday hacked for $2 million in DAI, in the most recent flash mortgage assault to hit the nascent defi business.
The attacker pilfered the platform’s Ycurve pool in batches of $50,000 in the stablecoin DAI. This explicit pool permits buyers to commerce stablecoins and earn curiosity.
In an announcement on Nov. 12, Akropolis revealed that the hack was executed throughout a physique of sensible contracts in its “financial savings swimming pools”.
“At ~14:36 GMT we observed a discrepancy in the APYs of our stablecoin swimming pools and recognized that ~2.0mn DAI had been drained out of the Ycurve and sUSD swimming pools,” it mentioned.
The swimming pools are mentioned to have been audited by two companies, however the hacker nonetheless discovered loopholes to take advantage of, wiring his loot to this handle. Akropolis defined:
The assault vectors used in the exploit weren’t recognized in both audit. The essence of the exploit in query is a mix of a re-entrancy assault with Dydx flash mortgage origination.
Others swimming pools weren’t affected. These embody compound DAI, compound USDC, AAVE sUSD, AAVE bUSD, curve bUSD, curve sBTC, it acknowledged. Native AKRO and ADEL staking swimming pools had been additionally left untouched.
Akropolis is a defi lending and financial savings protocol. Customers can take out loans, they usually also can earn curiosity on crypto deposits.
The Akropolis group mentioned it’s taking a look at methods to reimburse affected customers “in a method that’s sustainable for the challenge”. All stablecoin swimming pools have been halted for now, it added.
In October, one other defi challenge Harvest Finance was hacked for $24 million. The attacker focused the protocol’s liquidity swimming pools, performing an arbitrage assault utilizing a big flash mortgage – a sort of uncollatarized mortgage.
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