The Layer-1 blockchain network Harmony is investigating a security breach involving the unauthorized creation of roughly 4 billion ONE tokens. The incident caused the market value of ONE to plunge by over 25% amid a surge in trading volume. Harmony core developers are coordinating with centralized cryptocurrency exchanges to freeze affected deposits while working on technical fixes and potential blockchain rollback measures to secure the protocol.
Layer-1 blockchain protocol Harmony has suffered a security exploit resulting in the unauthorized minting of approximately 4 billion ONE tokens.
The unauthorized creation of tokens rapidly expanded the circulating supply of ONE, sparking immediate market turbulence. Following news of the breach, the price of the native cryptocurrency dropped by roughly 26% as traders reacted to the sudden inflationary shock and potential sell-offs on secondary markets.
According to project updates and security reports, an unidentified attacker exploited a protocol vulnerability to mint roughly 4 billion ONE tokens directly onto the network. The exploit led to a sudden increase in the total token supply by over 25%, diluting existing token holders and destabilizing liquidity pools.
Following the unauthorized minting, analytical reports indicated that approximately 2.8 billion of the newly created tokens were quickly routed toward major centralized cryptocurrency exchanges.
In response, the Harmony core development team confirmed they are actively investigating the root cause of the vulnerability. The project stated it is working in close collaboration with major digital asset exchanges to track and freeze the fraudulently generated funds before they can be liquidated on open spot markets.
To restore network integrity, technical teams are preparing a software patch to fix the underlying vulnerability. Developers are also evaluating network recovery options, including the possibility of a blockchain rollback or token burn mechanism to neutralize the excess circulating supply.
Harmony is a decentralized, shard-based Layer-1 blockchain designed to support decentralized applications and cross-chain operations. Its native utility token, ONE, is utilized for network gas fees, staking, and governance.
The recent exploit adds to a history of security challenges for the network. In June 2022, Harmony’s Horizon cross-chain bridge was breached in a high-profile attack that resulted in a loss of approximately $100 million in digital assets. Additionally, a technical staking bug in 2023 led to the improper minting of over 146 million ONE tokens.
As the investigation continues, Harmony developers remain focused on containing the exploit’s impact and coordinating with trading venues to restrict unauthorized fund movement. Further official updates are expected once the core team finalizes technical patches and determines whether a network rollback or alternative state-reversal measure will be executed.
