Qubic has resumed its layer-1 blockchain and opened a recovery process after a wallet-seed vulnerability enabled an attacker to remove roughly $1.4 million worth of QU tokens from 1,404 accounts. According to Cointelegraph, the network’s validators approved the recovery plan, while affected users can now verify their addresses and submit claims through Qubic’s reclaim platform.
Network resumes after emergency halt
Qubic’s blockchain explorer shows that processing restarted at 8:00 p.m. on Oct. 19. The network moved past tick 85,371,949, the point at which it had been stopped on Sunday.
The halt was intended to prevent additional movement of the stolen funds after attackers exploited vulnerable wallet software. Qubic’s validators, known as Computors, subsequently approved the plan to restart the network and handle claims from affected wallet holders.
Users whose wallets were affected can check their address through the reclaim platform and file a recovery claim. The deadline for submissions is May 1, 2027.
Vulnerable wallet seeds identified
The incident involved wallet seeds created by Qubic’s web wallet on certain Apple devices and browsers. An insecure random-number generator could produce predictable seeds, making it possible for an attacker to access wallets and transfer their contents.
Qubic said it corrected the seed-generation problem in the latest web-wallet release. Version 4.26.4 was released on Oct. 19.
The project has warned that any wallet created with a Qubic web wallet version earlier than 4.26.4 should be considered insecure, even if its funds were not taken. Its instructions are to update to version 4.26.4 or a later release, create a new wallet and move funds to it as soon as possible. The old wallet should not be used again.
A wallet seed is the underlying secret used to generate and recover a crypto wallet. If that secret can be predicted or obtained, an attacker may be able to control the assets held at associated addresses. In this case, the vulnerability was linked to how seeds were generated rather than to a failure of the blockchain’s transaction record itself.
Moneyiar market picture
Moneyiar data recorded at 8:39 a.m. on Oct. 21, 2026, showed Qubic (QUBIC) at $0.0000004675, up 5.04% over 24 hours but down 14.53% over seven days. The figures provide a snapshot of trading after the network’s restart, but do not establish the reason for the token’s price movements.
For context, Ethereum Name Service (ENS) was priced at $5.6745, up 4.77% over 24 hours and down 5.20% over seven days. OpenLedger (OPEN), with data recorded at 12:24 a.m. on Oct. 15, stood at $0.1014754745, down 1.04% in 24 hours and 10.16% over seven days. Propy (PRO) was $0.347261961 at 8:39 a.m. on Oct. 21, up 0.86% over 24 hours and down 8.74% over seven days.
