Qubic Pauses Network After Attacker Drains 1,404 Wallets

Qubic halted its mainnet on October 18, 2026 after an attacker drained 1,404 user wallets, according to Crypto Briefing. The outlet reported the haul totaled roughly 2.94 trillion QU tokens, worth about 1.3 million dollars at the time, taken through what it described as a weak seed-generation method tied to older Apple devices used by affected wallets.

The attack lasted about 1 hour and 44 minutes, long enough for the attacker to empty more than a thousand wallets before validators stopped the network at tick 85,371,949, Crypto Briefing said. Citing Qubic, the outlet reported that roughly 87.1% of the stolen QU never left the chain and stayed frozen in place, while the remaining 12.9% reached the exchange MEXC. MEXC froze the receiving account within 1 hour on suspicion it was tied to the attack, according to the report. Bitget also suspended all QUBIC deposits and withdrawals as a precaution, Crypto Briefing said.

Qubic's development team pushed out a client update meant to fix the seed-generation weakness, per Crypto Briefing. The outlet noted this is the second network-adjacent incident for Qubic in 2026, following an August exploit of the Vottun Bridge. Caution is warranted for holders of QU: it remains unclear when Qubic will restart its mainnet on the patched client, whether Bitget will restore trading, or how MEXC and Qubic will handle the frozen funds and any compensation for affected wallet holders, according to the reporting. The Defiant also covered the wallet drain and subsequent halt, putting the loss at roughly 1.3 million dollars.