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Whitehat developer unlocks $2 million stuck in a 2016 Ethereum ICO contract for nine years

0xflorent, a security researcher, found an integer-overflow flaw in the HongCoin token sale contract that lets the team unlock funds for 48 original investors. It is the second such recovery he has publicized in eight days.

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coindesk.comStai leggendo2 mesi fa

Whitehat developer unlocks $2 million stuck in a 2016 Ethereum ICO contract for nine years

Researcher 0xflorent recovered 1,003 ETH (~$2M) trapped in a 2016 ICO contract by exploiting an unpatched integer-overflow in an admin function, with HongCoin's multisig co-signing 41 unlock transactions. Pre-2018 Solidity contracts lack built-in overflow protection — dormant admin functions on legacy deployments are live exploit surface worth auditing.

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domenica 31 maggio 2026·theblock.co
Dev helps rescue $2 million locked in 2016 ICO contract for nine years with whitehat exploit
The developer told The Block that two of 48 eligible investors have already claimed 96.5 ETH that was unfrozen, worth nearly $200,000 at current prices.
domenica 31 maggio 2026·cryptobriefing.com
HongCoin investors recover $2M in locked ETH after nine years
A white-hat researcher exploited an integer-overflow bug in HongCoin's 2016 ICO contract, unlocking 1,003 ETH worth $2M for 48 original investors.

Whitehat developer unlocks $2 million stuck in a 2016 Ethereum ICO contract for nine years

Confronto fonti

Whitehat developer unlocks $2 million stuck in a 2016 Ethereum ICO contract for nine years

Timeline cronologica

Dev helps rescue $2 million locked in 2016 ICO contract for nine years with whitehat exploit

HongCoin investors recover $2M in locked ETH after nine years

HongCoin investors recover $2M in locked ETH after nine years

White Hat Helps Recover $2 Million from 2016 ICO Project

Dev helps rescue $2 million locked in 2016 ICO contract for nine years with whitehat exploit

Whitehat Helps Recover $2M in ETH Stuck Since 2016 ICO - Decrypt

Researcher Cracks 9-Year-Old Bug, Frees $2M in Ethereum Locked Since 2016 ICO

White Hat Helps Recover $2 Million from 2016 ICO Project

Whitehat developer unlocks $2 million stuck in a 2016 Ethereum ICO contract for nine years

Whitehat Helps Recover $2M in ETH Stuck Since 2016 ICO - Decrypt

Researcher Cracks 9-Year-Old Bug, Frees $2M in Ethereum Locked Since 2016 ICO

Recupero whitehat Ethereum ICO 2016: sbloccati 2 milioni in ETH

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