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Hack history / 2023 / Hack or exploit

Platypus Finance

Hack or exploit on Jul 11, 2023 · Withdrawal Logic Flaw

ATTACK TX CONFIRMED ON CHAININ REVIEWSOURCES DISAGREE ON DATE OR LOSS · 4 SOURCES
Lost
$50K
sources: $50K to $157K
Returned
none listed
as the sources state it
Rank
#1,919
among thefts by dollars lost

What happened

Platypus's liquidity conversion logic for LP-USDC assumed a 1:1 ratio between USDC and USDC.e, ignoring market price discrepancies. When exchanging USDC for USDC.e, the calculation produced unreasonably large quantities, allowing arbitrageurs to extract value.

In review: sources disagree on the loss.

Details

Date
Jul 11, 2023
Kind
Hack or exploit
Method
Withdrawal Logic Flaw
How in
Smart contract bug
Target
DeFi protocol
Chains
Avalanche, Polygon

Reported by

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Cite this pageSwanBluechip, "Platypus Finance hack, Jul 11, 2023: $50K lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht556eba254a/ (data as of 2026-10-31).
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