Incident case file
Sign in to watchQuant — Access Control Smart Contract Exploit
Incident date Apr 28, 2026
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UnknownEthereumSmart contract exploitCluster: QUANT-ETH-2026-04
Estimated loss
$138K
Affected users
Number of affected users is not confirmed
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Investigation
40%
Facts and investigation
Ledger
Attacker
TODO
Funds moved to
TODO
Linked
TODO
Chronology
1 beatOn April 28, 2026, an attacker exploited an access control vulnerability in a Quant protocol smart contract on Ethereum, extracting approximately $138,000. Very limited technical details have been publicly disclosed. Attacker identity, exploit methodology, and current fund location remain unknown.
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