Harmony explores rollback after suspected exploit floods exchanges with ONE tokens
Harmony works with exchanges to freeze funds and prepares a patch after 2.8 billion unauthorized ONE tokens reportedly reached trading platforms.

Harmony, the layer-1 blockchain behind the ONE token, is considering a network rollback after a suspected exploit led to 2.8 billion unauthorized ONE tokens being sent to exchanges. The project is coordinating with trading platforms to freeze the affected funds.
Response underway
Harmony is also preparing a patch to address the vulnerability that may have allowed the unauthorized minting of tokens. The team has not yet confirmed whether a rollback will be executed.
- 2.8 billion ONE tokens reportedly hit exchanges
- Harmony is working with exchanges to freeze assets
- A patch is being prepared
- A rollback is under consideration
The incident adds to a series of security breaches affecting cross-chain bridges and blockchain networks. Harmony has not released a full post-mortem at the time of writing.