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Hack history / 2021 / Hack or exploit

Merlin

Hack or exploit on Jun 29, 2021 · Arithmetic Error

SOURCES AGREE ON DATE AND LOSS · 3 SOURCES
Lost
$330K
sources: $300K to $330K
Returned
none listed
as the sources state it
Rank
#1,285
among thefts by dollars lost

What happened

Merlin was exploited for $330K when an attacker deployed a fake Alpaca-BNB vault and sent 1000 BNB to trick the contract into inflating reward calculations.

Details

Date
Jun 29, 2021
Kind
Hack or exploit
Method
Arithmetic Error
How in
Smart contract bug
Target
DeFi protocol
Chains
BNB Chain
Audit (rekt.news)
unaudited

Reported by

Related incidents

Merlin 2024 · Hack or exploit · undisclosed
MERLIN DEX 2023 · Rug pull · $1.8M
Merlin 2021 · Hack or exploit · $680K
Merlin 2021 · Hack or exploit · $550K
Compound V2 2021 · Hack or exploit · $147M
Cite this pageSwanBluechip, "Merlin hack, Jun 29, 2021: $330K lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht8d660e0bb7/ (data as of 2026-10-31).
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