A pseudonymous white-hat hacker known as 0xflorent has successfully recovered 1,003 ETH (valued at approximately $2 million) that had been trapped in a faulty Initial Coin Offering (ICO) smart contract for nearly a decade.
The Decade-Old Freeze: The Story of Hong Coin
Originally pitched in 2016, Hong Coin (HONG) was designed to be a community-run decentralized venture capital fund. Investors contributed Ethereum to the project, but the ICO failed to reach its funding goal. Under normal circumstances, the smart contract should have automatically refunded the participants. However, a silent bug in the refund mechanism broke the code, locking the funds indefinitely.
Recovery Operation Highlights:
- Total Recovered Funds: 1,003 ETH
- Affected Investors: 48
- Year of ICO Launch: 2016
Exploiting an Old Bug for Good
The breakthrough came when 0xflorent collaborated with the original creators of Hong Coin. The hacker identified an administrative function containing an integer overflow vulnerability—a common security flaw in early Ethereum development.
“The way out was an admin function with an integer overflow vulnerability. Calling it with a specific input resets a holder’s balance and unblocks the refund check,” the hacker explained.
According to on-chain data from Etherscan, the recovery process is actively underway. One major investor has already received a refund of 96 ETH (worth roughly $192,500), while other smaller balances are gradually being distributed back to their rightful owners.
FAQ: Frequently Asked Questions
What is smart contract recovery in legacy protocols?
It refers to the technical process of identifying and utilizing overlooked code structures or vulnerabilities in older Ethereum contracts to retrieve lost or frozen digital assets.
Why did the refund fail initially?
In 2016, smart contract standards were still in their infancy. A logical error in the contract’s refund function prevented the automated distribution of funds once the ICO goal was missed.
Is this recovery method legal and ethical?
Yes. The operation was conducted in full cooperation with the original creators of the Hong Coin project, making it a textbook example of white-hat hacking to protect users.
