Harmony Protocol Hit by $3.2 Million Exploit After Unauthorized Token Minting
An attacker minted roughly 4 billion unauthorized ONE tokens on Harmony's network, sending the price down as much as 34% in 24 hours. Here's what's confirmed.
What Happened
Harmony's ONE token dropped as much as 34% within 24 hours after an attacker minted roughly 4 billion unauthorized ONE tokens, according to The Block. The newly minted tokens added about 26% to the existing circulating supply of roughly 15 billion ONE, per CoinDesk. The price fell to around $0.0008, putting the value of the minted tokens near $3.2 million at time of reporting.
How the Exploit Unfolded
The attacker minted the tokens using empty blocks on Harmony's network, though the company has not disclosed the technical mechanism that allowed this. Per The Block, about 97% of the minted supply had already moved onto exchanges, either sold or sitting in deposit wallets, by the time of reporting. Roughly 115 million ONE, about 2.9% of the total minted, remained unsold on-chain.
Harmony's Response
Harmony confirmed the exploit publicly and said it instructed network operators to install emergency software. The company paused its token bridge and asked exchanges to freeze funds tied to four wallet addresses linked to the attack. Harmony said it is developing a patch and evaluating rollback options, though it has not confirmed the root cause of the exploit or its own total for the unauthorized issuance.
A Pattern, Not a First
This is not Harmony's first security incident. The network's Horizon Bridge was exploited for roughly $100 million in 2022, and a separate bug in 2023 resulted in the improper minting of about 146.3 million ONE. Repeated incidents on the same network raise a plain question for anyone evaluating where to hold or trade assets: a platform's underlying architecture and audit history matter as much as what it advertises.
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This article is for informational purposes only and does not constitute financial advice. It does not recommend buying, selling, or holding ONE or any other specific asset.
