- Monero’s 18-block reorganization created potential double-spend vulnerabilities, alarming security researchers and analysts.
- The event invalidated 30+ minutes of transactions, making the standard 10-confirmation rule potentially insufficient.
Monero experienced an 18-block chain reorganization that introduced possible double-spend attacks. Users typically await 10 confirmations before treating Monero transactions as settled. This practice might not offer enough security following the reorganization. The event invalidated over thirty minutes of recorded transactions.
These reorganizations happen when multiple chain versions emerge simultaneously. The network consensus mechanism determines which chain becomes accepted. All transactions contained within the unused blocks get discarded.
The network creates blocks at two-minute intervals normally. An 18-block reorganization indicates substantial chain modification. Smaller reorganizations occur periodically in proof-of-work networks, but this size implies potential coordination or hash power accumulation.
ETHNews analysts continue to express concerns about network protection. One researcher observed that reorganization risks might enable double-spending below the 51% hash rate threshold. This vulnerability needs addressing through network improvements.
This development follows previous alerts about mining centralization. During August 2025, reports indicated a mining operation approaching majority hash power. Several trading platforms paused XMR deposits temporarily in response.
Blockchain information shows major mining pools often constructing competing chains. Smaller miners frequently find their blocks excluded from the main chain. This circumstance permits malicious actors to reverse transactions or perform double-spends.
The incident proves that transactions with 10 confirmations remain reversible. Should a longer chain supersede the original, the same funds could be spent twice.
Monero (XMR) is trading at approximately $303.11, marking a 1.33% drop in the last 24 hours. However, the broader trend remains bullish, with XMR up 11.66% over the past week, 28.63% in the past month, and a strong 45.2% gain over the past 6 months. On a yearly basis, Monero has surged 78.7%, indicating consistent growth despite recent volatility and network-related concerns.
Monero’s technical outlook is cautiously optimistic. The price has recently reclaimed the $235 level, which was a key Fibonacci retracement zone, and confirmed it as support. This forms a foundation for potential continuation toward higher resistance levels, particularly in the $339 to $417 range.
Some trading setups are targeting a breakout above $276.50, with bullish momentum contingent on sustained volume and confirmation from RSI and moving averages, which currently sit in neutral territory. Although indicators are not strongly directional at the moment, the technical consolidation hints at a possible upward breakout.
ETHNews prediction: If Monero maintains its current trajectory and avoids further network controversies, its price is projected to reach $336.40 within the next 7–10 days. However, if bearish sentiment driven by trust issues resurfaces, we may see a fallback to $272.00, where critical support lies.
