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Hack history / 2021 / Hack or exploit

Alpha Finance

Hack or exploit on Feb 13, 2021 · Borrow Logic Flaw

SOURCES AGREE ON DATE AND LOSS · 4 SOURCES
Lost
$37.5M
dollars at the time
Returned
none listed
as the sources state it
Rank
#135
among thefts by dollars lost

What happened

Alpha Finance was exploited when an attacker used recursive flash loans to borrow against inflated sUSD debt in the CREAM Iron Bank. A rounding error in the borrow function math enabled manipulation of undercollateralized lending.

Details

Date
Feb 13, 2021
Kind
Hack or exploit
Method
Borrow Logic Flaw
How in
Smart contract bug
Target
DeFi protocol
Chains
Ethereum, BNB Chain
Audit (rekt.news)
Quantstamp, Peckshield

Reported by

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Cite this pageSwanBluechip, "Alpha Finance hack, Feb 13, 2021: $37.5M lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht81eafa96af/ (data as of 2026-10-31).
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