Hack history / 2021 / Hack or exploit
Array Finance
Hack or exploit on Jul 19, 2021 · Flash loan attack
ONE SOURCE · 1 SOURCE
Lost
$496K
dollars at the time
Returned
none listed
as the sources state it
Rank
#1,161
among thefts by dollars lost
What happened
The DeFi project Array Finance was attacked by a lightning loan. The attacker used Array Finance's pricing mechanism to rely on aBPT's totalSupply to attack Array Finance. Officials stated that the attacker made a profit of about 272.94 ETH, worth about $515,000.
Details
- Date
- Jul 19, 2021
- Kind
- Hack or exploit
- Method
- Flash loan attack
- How in
- Price, oracle and governance
- Target
- not stated
- Chains
- Ethereum
Reported by
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Cite this page
SwanBluechip, "Array Finance hack, Jul 19, 2021: $496K lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht9e528a0a7a/ (data as of 2026-11-01).