Written by: AIMan@Golden Finance
Did Qubic successfully perform a 51% attack on Monero?
As early as the end of July, the Monero community was rumored that the QUBIC mining pool was attacking Monero. Now it seems that QUBIC has succeeded.
On August 12, 2025, Slow Fog tweeted that the Monero network (XMR) is suspected of suffering a 51% attack. Monero recently encountered a chain reorganization of 6 blocks deep mined by an unknown pool. However, no mining pool on miningpoolstats has over 50% of the hash rate, so this could be a covert malicious hash power attack or an accidental mining competition.
At the end of July during the QUBIC attack, the market value of Monero was approximately $6 billion. As of now, the market value of XMR is about $4.6 billion, having dropped over 20%. Meanwhile, the market value of QUBIC is only around $2.3 billion. If QUBIC is indeed...