Hack history / 2024 / Hack or exploit
Unizen
Hack or exploit on Mar 8, 2024 · Arbitrary External Call
SOURCES AGREE ON DATE AND LOSS · 5 SOURCES
Lost
$2.1M
dollars at the time
Returned
$2.1M
100% of the loss, as a source states it
Rank
#673
among thefts by dollars lost
What happened
On March 8, 2024, the Unizen DeFi aggregator on Ethereum was exploited for $2.1M (primarily USDT and DAI) via an external call vulnerability introduced in a contract upgrade. The CEO reimbursed affected users starting March 11.
Details
- Date
- Mar 8, 2024
- Kind
- Hack or exploit
- Method
- Arbitrary External Call
- How in
- Smart contract bug
- Target
- DeFi protocol
- Chains
- Ethereum
- Audit (rekt.news)
- Halborn, Verichains
After the theft
- Victims reimbursed
- yes, amount not stated
“The CEO reimbursed affected users starting March 11.” (DefiLlama) - Recovered or seized
- $185K
“On March 12th, Unizen's CTO Martin Granström tweeted that they had recovered $185,000 worth of stolen funds from four hackers.” (SlowMist Hacked)
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BasketDAO 2024 · Hack or exploit · $1.2M
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Aave 2024 · Hack or exploit · $56K
Cite this page
SwanBluechip, "Unizen hack, Mar 8, 2024: $2.1M lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/htc5174a14db/ (data as of 2026-10-31).