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3w ago

Qubic Briefly Seizes Majority of Monero Hashrate

Security firms say proof of sustained control or double-spends is lacking despite rapid miner redirection and a plunge in XMR’s price

Qubic claims majority control of monero hashrate, raising 51% attack fears
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Monero rocked by successful 51% attack as Qubic pool seizes control
Monero’s 51% attack problem: inside qubic’s controversial network takeover

Overview

  • Qubic founder Sergey Ivancheglo said its uPoW incentives pushed the pool’s share above 51%, citing on-chain block windows and observed reorganizations.
  • Ledger CTO Charles Guillemet and SlowMist founder Yu Xian reported deep reorgs and orphaned blocks consistent with a 51% event, though they stopped short of confirming a lasting takeover.
  • Monero miners organized boycotts and hashpower redirection campaigns that cut Qubic’s share from nearly 45% to about 15% within hours.
  • XMR’s market value fell more than 8% in 24 hours and over 17% in seven days as traders reacted to centralization fears.
  • Developers and analysts are debating RandomX adjustments and new economic incentives to prevent similar hashpower concentration episodes