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Hack history / 2021 / Hack or exploit

Belt Finance

Hack or exploit on May 29, 2021 · Incorrect Share Accounting

SOURCES AGREE ON DATE AND LOSS · 4 SOURCES
Lost
$6.3M
dollars at the time
Returned
none listed
as the sources state it
Rank
#410
among thefts by dollars lost

What happened

Belt Finance on BSC lost $6.3M on May 29, 2021 to a flash loan exploit. Attacker used flash loans to deposit into undersubscribed strategies and manipulate pool ratios, exploiting faulty vault-share valuation that assumed strategies remained balanced.

Details

Date
May 29, 2021
Kind
Hack or exploit
Method
Incorrect Share Accounting
How in
Smart contract bug
Target
DeFi protocol
Chains
BNB Chain
Audit (rekt.news)
Haechi

Reported by

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Cite this pageSwanBluechip, "Belt Finance hack, May 29, 2021: $6.3M lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht843968b133/ (data as of 2026-10-31).
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