Hack history / 2023 / Hack or exploit
Biswap
Hack or exploit on Jun 30, 2023 · Improper Access Control
ATTACK TX CONFIRMED ON CHAININ REVIEWSOURCES DISAGREE ON DATE OR LOSS · 3 SOURCES
Lost
$72K
sources: $72K to $710K
Returned
none listed
as the sources state it
Rank
#1,832
among thefts by dollars lost
What happened
Biswap's V3 Migrator contract lacked proper access control and parameter validation when migrating liquidity from V2 to V3. An attacker exploited this to call the migrator contract and steal funds from liquidity providers who had authorized their LP tokens.
In review: sources disagree on the loss.
Details
- Date
- Jun 30, 2023
- Kind
- Hack or exploit
- Method
- Improper Access Control
- How in
- Smart contract bug
- Target
- DeFi protocol
- Chains
- BNB Chain
Reported by
Related incidents
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Exactly 2023 · Hack or exploit · $7.5M
Terraport 2023 · Hack or exploit · $4M
Curve Finance MEV Bot 2023 · Hack or exploit · $2M
Atlantis Loans 2023 · Hack or exploit · $1.1M
Exactly 2023 · Hack or exploit · $7.5M
Terraport 2023 · Hack or exploit · $4M
Curve Finance MEV Bot 2023 · Hack or exploit · $2M
Atlantis Loans 2023 · Hack or exploit · $1.1M
Cite this page
SwanBluechip, "Biswap hack, Jun 30, 2023: $72K lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/htb43abfb744/ (data as of 2026-10-31).