Layer-1 blockchain Qubic has restarted its network and launched a recovery process after a wallet seed vulnerability allowed an attacker to drain roughly $1.4 million in QU tokens from 1,404 accounts, according to the project's latest update.
Qubic's blockchain explorer shows the network resumed processing ticks at 8:00 pm on Oct. 19, advancing beyond tick 85,371,949, where it was halted on Sunday.
Validators approve recovery plan
Qubic said its network validators, known as Computors, had approved a recovery plan and that the project had launched a claims platform for affected wallet holders.
Affected users can check their address and submit a claim through Qubic's reclaim platform. Claims must be submitted by May 1, 2027, according to Qubic.
Why the network was halted
The network was halted Sunday to prevent further movement of stolen funds after attackers exploited predictable wallet seeds generated by vulnerable wallet software.
The vulnerability affected wallet seeds generated using Qubic's web wallet on certain Apple devices and browsers, where an insecure random-number generator could produce predictable seeds. Qubic said Sunday it had fixed the seed-generation flaw in the latest version of its web wallet.
What holders are being told
Qubic advised users who created wallets with the web wallet before version 4.26.4, released Oct. 19, to treat those wallets as insecure even if their funds were never touched.
The team told users to update to web wallet 4.26.4 or later, create a new wallet, move funds to it as soon as possible and never use the old wallet again.
