Qubic said an attacker exploited insufficient randomness in the seed generation process for some wallets between 23:42 UTC yesterday and 01:26 UTC today, gaining access to 1,404 Qubic wallets and moving about 2.94 trillion QU. The project said the issue was tied to seed generation rather than the Qubic protocol itself. According to the announcement, affected seeds include those created before Oct. 18, 2026 in any browser on iPhone or iPad, those created before the same date in Safari on Mac, and those created before July 2025 through the Qubic iOS app. Qubic said the network was paused at tick 85,371,949. It added that 87.1% of the stolen funds remain on the Qubic network and have been frozen, while the other 12.9% was transferred to MEXC, where the receiving accounts have also been frozen. The project said the seed generation issue has been fixed in version 4.26.4, and that next steps will be decided by the Computor quorum under network rules. A full technical report will be released after a fund recovery plan is finalized.
According to a Qubic announcement cited by ChainCatcher, an attacker exploited insufficient randomness in the seed generation process for some wallets between 23:42 UTC yesterday and 01:26 UTC today, accessed 1,404 Qubic wallets, and moved about 2.94 trillion QU.
Qubic said the problem was in the seed generation mechanism, not in the Qubic protocol itself.
Affected seed scope
The affected seeds include those created before Oct. 18, 2026 in any browser on iPhone or iPad, those created before the same date in Safari on Mac, and those created before July 2025 through the Qubic iOS app.
Fund movement and network response
Qubic said the network was paused at tick 85,371,949. Of the stolen funds, 87.1% remains on the Qubic network and has been frozen. The remaining 12.9% was transferred to MEXC, and the related receiving accounts have also been frozen.
Fix and next steps
Qubic said the seed generation issue was fixed in version 4.26.4. It added that follow-up handling will be decided by the Computor quorum under network rules, and that a full technical report will be released after a fund recovery plan is determined.
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