Qubic Mining Pool Seizes Control of Monero

The founder of SlowMist, known by the pseudonym evilcos, announced a successful 51% attack on the Monero network by the Qubic mining pool. The platform now controls a significant portion of the network’s hashrate.

关注一段时间了，这次针对门罗币的 51% 攻击看来是成功了（感谢黑手册群友信息），不过成本也很高，最终不确定这样做的经济收益是什么…

现在理论上 Qubic 这个矿池可以重写区块链，实现双重支付，并审查任何交易…

相关平台注意可能的威胁，保持关注。 https://t.co/cKlMyuvy9C pic.twitter.com/U9J9bDiF85

— Cos(余弦)😶‍🌫️ (@evilcos) August 12, 2025

Experts have observed a major blockchain reorganization. Qubic’s control over the hashrate allows it to rewrite transaction history, conduct double spending, and censor operations on the network.

According to Charles Guillemet, CTO of Ledger, maintaining such an attack could cost approximately $75 million per day.

Monero appears to be in the midst of a successful 51% attack.

The privacy-focused blockchain, launched in 2014 and long targeted by governments and 3-letters agencies, is already banned from most major centralized exchanges.

The Qubic mining pool has been amassing hashrate for…

— Charles Guillemet (@P3b7_) August 12, 2025

A Calculated PR Strategy?

Alex Petrov, co-founder and CIO of Hyperfusion, suggested to ForkLog that Qubic’s actions might be part of a calculated PR strategy. He believes the conflict arose out of nowhere and serves as a way for Qubic to utilize computing resources while attracting attention.

According to the expert, the event does not pose a serious threat to Monero. While XMR’s reputation might suffer slightly and exchanges have already increased the number of required transaction confirmations, the fundamental value of the asset remains unchanged. Meanwhile, Qubic benefits by performing useful work and garnering additional attention.

Amid these events, Qubic (QUBIC) prices have shown significant volatility. The project reached its all-time high at 0.00001256 and a low at 0.0000007032.

At the time of writing, XMR is trading at $245.01 (-10.2% over the past day), according to CoinGecko.

Back in July, the Qubic platform, led by IOTA co-founder Sergey Ivancheglo, announced plans to capture 51% of Monero’s hashrate between August 2 and 31.