Monero Reorg Attack Fails To Halt 7% Rally

September 15, 2025 — Monero (XMR), the leading privacy-focused cryptocurrency, surged 7% to $301.31. The rally came despite an 18-block Monero reorg attack that reversed 117 transactions, marking the largest reorganization in the project’s history.

The disruption followed a coordinated effort by Qubic, a Layer-1 chain that achieved 51% hashrate control. While the Monero community debated the severity of the attack, market sentiment pointed to resilience, with investors reinforcing confidence in the network’s privacy features.

Qubic’s Role in the Monero Reorg Attack

Monero has faced reorgs before, including a 6-block incident in 2019. However, the latest reorg attack is unprecedented in scale, triggered by Qubic sustaining 51% dominance since August 2025

Qubic miners earned $2 million in Epoch 176, intensifying competition and lifting Monero’s overall hashrate by 15% since July. While some fear the proof-of-work system remains vulnerable, others view the event as a stress test that Monero has survived with unexpected strength.

Market Impact and Long-Term Security Outlook

The immediate effect of the Monero reorg attack was muted, with XMR rallying 7% in 24 hours. Analysts suggest a potential move toward $320, though heightened volatility could emerge if further attacks occur.