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anchored·3S5FLa…mbkESummary
Unizen is a cross-chain DEX aggregator and smart exchange ecosystem operating on Ethereum and multiple other networks, with a native utility token ZCX. On March 8, 2024, the platform suffered a $2.1 million exploit caused by an unsafe external call vulnerability introduced during a smart contract upgrade; the attacker subsequently laundered the stolen funds through Tornado Cash in August 2024. Despite a CEO-funded reimbursement covering approximately 99% of affected users, the incident raised significant questions about upgrade security practices given that two prior audits (Halborn, Verichain 2022) had not caught the flaw.
Connected Entities
8 entities · 60 linked investigations- Optimism→mentioned with→Arbitrum(65%)
- Optimism→mentioned with→Ethereum(80%)
- Fantom (Sonic Labs)→mentioned with→Binance(60%)
- Binance→mentioned with→Ethereum(65%)
- Uniswap→mentioned with→Ethereum(80%)
- Uniswap→mentioned with→Optimism(60%)
- Unizen→mentioned with→Binance(60%)
- Unizen→mentioned with→Fantom (Sonic Labs)(60%)
- Arbitrum→mentioned with→Binance(65%)
- Polygon→mentioned with→Ethereum(70%)
- + 9 more
Timeline(7 events)
8 March 2024
Unizen DEX aggregation smart contract exploited for approximately $2.1 million in USDT via an unsafe external call vulnerability introduced during a contract upgrade. PeckShield identifies the flaw.
BeInCrypto / PeckShield8 March 2024
Unizen team sends on-chain messages to attacker offering a 20% bounty for return of stolen funds.
Web3 Is Going Great11 March 2024
CEO Sean Noga announces personal loan of reimbursement funds to cover over 99% of affected users; immediate payouts begin in USDT/USDC for losses under $750,000.
Coinspeaker7 August 2024
PeckShield flags the first movement of stolen funds since the March exploit. Attacker converts 2,179,859 DAI to 865.4 ETH and routes it through Tornado Cash across 26 transactions.
CoinTelegraph7 August 2025
Unizen reports infrastructure overhaul including SDK fixes, new DEX integrations, and deployment of a DRIP reward mechanism with TVL-linked staking APR.
CoinMarketCap AI summaryDecision Log
- hash: 7B4YSK7u61TnrLsNHaxR8cRAhANW1qg5ctJUFAu81xF
This investigation is cryptographically anchored to the Solana blockchain (1 event). 12 of 13 cited source URLs have an Internet Archive snapshot.
model: claude-sonnet-4-6
generated: 5/4/2026, 2:54:34 AM
last updated: 7/25/2026, 8:46:14 AM
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