SlowMistโs founder confirmed that the Qubic mining pool has successfully carried out a 51% attack on Monero. Qubic now controls most of the networkโs hashrate, causing a significant chain reorganization. This control lets Qubic rewrite transaction history, perform double-spend attacks, and block transactions. Ledgerโs CTO warned that sustaining this attack could cost around $75 million per day, highlighting serious risks to Moneroโs network security.