「0xFlorent」として知られるホワイトハッカーが、HongCoinのコントラクトから約200万ドル相当の1,003.62 ETHを回収した。この資金は、2016年のICOが目標額に達しなかった後、長年凍結されたままとなっていた。
今回の回収には、元のマルチシグウォレットに制限されていた管理機能における未修正の整数オーバーフローが利用された。0xFlorent氏はHongCoinのチームと連携し、チームが41件のトランザクションに署名することでトークン残高をリセットし、不具合のあった払い戻しチェックを回避した。7人の小規模な保有者は回避策なしで直接払い戻しを受けた一方、48人の当初の投資家が資金を請求できるようになった。
ユーザーは、9年を経て2016年のHongCoin ICOから倫理的に資金を回収したホワイトハッカーの0xFlorent氏を称賛した。議論では、レガシーコードにおけるスマートコントラクトの脆弱性や、仮想通貨業界におけるホワイトハッカーの活動の重要性が強調された。好意的な反応は、当初の投資家への払い戻しや、業界が学んだ教訓に向けられている。
A developer known as Florent has rescued 1,003 ETH that had been locked in the 2016 HongCoin ICO smart contract for nine years.
— Crypto Banter (@crypto_banter) 2026年6月1日
He identified a vulnerability in the old contract, collaborated with the HongCoin team, tested the solution on a testnet, and helped enable refunds for… pic.twitter.com/KD3vQLCxtq
Whitehat hero alert! 🦸 0xflorent, a security researcher, discovered an integer-overflow vulnerability in a 2016 HongCoin contract & unlocked $2M that was stuck for 9 years. This is why we need ethical hackers in crypto. #Ethereum #Crypto #Security #Whitehat #DeFi
— Ewerton Costa (@ewertoncostapt) 2026年6月1日
Whitehat recovery of $2M in $ETH from the HongCoin 2016 ICO is remarkable. This highlights the ongoing efforts to resolve long-standing issues within the crypto space pic.twitter.com/XjAADCyBY9
— John Morgan (@johnmorganFL) 2026年6月1日
9 years of locked ETH finally freed is wild. Props for finding the bug and doing right by those 48 investors instead of draining it silently. Real white-hat energy. 👏
— Jimmy Z (@Xiaozhu9110) 2026年6月1日
Great work. Almost 10 years later.
— 0xMarshal (@DaudaMarshal) 2026年6月1日
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