A breach involving SingularityNET, an AI-focused blockchain project, is widening across its bridge infrastructure, with FET drained from a converter contract, hundreds of millions of NTX minted and WMTx now hit by an unauthorized mint on Ethereum.
- World Mobile Chain, a blockchain-based mobile network, said in a Saturday post on X that an exploit of the SingularityNET bridge resulted in unauthorized WMTx being minted on Ethereum.
Security Notice ⚠️
— World Mobile Chain (@wmchain) September 20, 2026
We have identified an exploit of the @SingularityNET bridge that has resulted in the unauthorised minting of $WMTx on Ethereum. This had led to recent price action across all exchanges that $WMTx is listed on.
Our team is actively responding:
• We are in…
- The project said it was working with exchanges to freeze affected deposits and with security partners to revoke minting authorities. WMTx fell roughly 46% over 24 hours to about $0.018 following the incident.
- It's not yet clear how much WMTx was minted or whether the same compromised credential used elsewhere in the attack was responsible.
FET and NTX already tied to the same attacker
Hours earlier, Artificial Superintelligence Alliance, the coalition behind FET, said in an X post an unauthorized party withdrew about $1.56 million in FET from its token converter.
We are aware of an exploit involving the FET token migration and bridge architecture, as well as other tokens within this infrastructure. Our team responded immediately and is working with security partners.
— Artificial Superintelligence Alliance (@ASI_Alliance) September 20, 2026
An unauthorized party withdrew approximately $1.56M in FET from the…
- On-chain analysis found that roughly 8.7 million FET was released after the attacker submitted a transaction carrying a valid signature from the bridge's own conversion authorizer.
- The evidence points to compromise of the off-chain signing key or backend rather than forged signatures or a bug that bypassed authorization.
The incident then spread to NuNet, a decentralized computing project, whose NTX token was hit by a separate compromised minter key, according to data from Blockaid.
🚨Blockaid detected an ongoing exploit on @Fetch_ai on Ethereum.
— Blockaid (@blockaid_) September 19, 2026
The same exploiter wallet then received a large NTX mint from the @nunet_global deployer account.
~$2.01M so far (~$1.56M FET drained from the converter + ~$452k NTX minted) across the cluster. Attack still…
More than 408 million NTX, roughly 42% of its existing supply at the time, was minted to the same wallet receiving the stolen FET. On-chain analysis also found that the compromised NTX minter had interacted with that wallet before the FET drain, strengthening the case that both attacks were coordinated.
As a result of that unauthorized mint, NTX fell more than 70% in 24 hours and touched an all-time low near $0.00033, while FET was down roughly 7% over the same period.
- World Mobile has confirmed that its unauthorized mint came through the SingularityNET bridge, but neither it nor the ASI Alliance has yet established publicly whether the WMTx mint was executed with the same compromised key behind the FET drain.