Harmony is considering rolling back its blockchain after a suspected exploit minted 2.8 billion unauthorized ONE tokens that hit trading platforms. The team said it's working with exchanges to freeze funds tied to the incident and is preparing a patch to address the underlying issue.
The suspected exploit
Claims circulating in the crypto community point to 2.8 billion ONE tokens that were created without authorization and then moved to exchanges. That's a significant chunk of the token's total supply, which was around 13.5 billion before the incident, according to public data. The inflation would have diluted existing holders and could have allowed the attacker to sell off the tokens for other assets.
Harmony hasn't confirmed the exact mechanism behind the exploit, but the team acknowledged the unauthorized minting in a statement. The company said it's investigating how the tokens were generated and where they ended up.
Freeze and patch
In response, Harmony is coordinating with exchanges to freeze any funds connected to the exploit. That's a standard move in these situations, though it only works if exchanges cooperate quickly. The team is also preparing a patch to close the vulnerability that allowed the unauthorized minting in the first place.
The patch is still in development, and Harmony hasn't given a timeline for when it will be deployed. Until then, the network remains exposed to the same flaw, though the team said it's monitoring activity closely.
The rollback question
The bigger decision is whether to roll back the blockchain to a state before the exploit. A rollback would undo the unauthorized minting and restore the original supply, but it's a drastic step. It would require consensus from validators and could cause a chain split if some nodes refuse to go along.
Harmony said it's considering the option but hasn't committed to it. The team is likely weighing the risk of a contentious hard fork against the damage done by the inflated supply. If the 2.8 billion tokens were already sold, a rollback might not fully reverse the harm.
For now, the focus is on freezing funds and patching the hole. The team said it will provide updates as the investigation progresses.
