# Monero Network Faces 51% Hashrate Control and Reorganization Fears ▴ News

**Published:** 2025-08-12
**Categories:** News

---

The Monero network experienced a significant systemic stress event as the Qubic mining pool claimed over 51% of its hashrate, triggering fears of a [51% attack](https://prime.greeks.live/area/51-attack/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite). This concentration of computational power directly impacts the network’s foundational security mechanisms, enabling potential block reorganization and transaction censorship. Such an event directly challenges the integrity of the blockchain’s immutability and the finality of transactions, which are paramount for any digital asset system. The immediate consequence manifests as heightened market volatility and a notable decline in asset valuation, reflecting a degradation of trust in the underlying protocol’s resilience.

This incident underscores the inherent vulnerabilities within smaller [proof-of-work](https://prime.greeks.live/area/proof-of-work/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite) chains when hashrate distribution becomes disproportionately centralized. A robust system architecture mandates continuous monitoring and adaptive countermeasures to mitigate such existential threats, ensuring the network maintains its intended operational parameters and security assurances.

The Monero network experienced a critical security compromise due to a concentrated hashrate, revealing systemic vulnerabilities in its consensus mechanism and impacting market confidence.

- **Hashrate Control Threshold** ▴ Over 51%

- **Primary Actor** ▴ Qubic Mining Pool led by Sergey Ivancheglo

- **Observed Reorganization Depth** ▴ Six blocks

- **Estimated Attack Cost** ▴ $75 million per day

- **Monero Price Impact** ▴ Fell to a three-month low

Signal Acquired from ▴ <a href="https://www.ainvest.com/news/qubic-claims-51-control-monero-network-sparking-security-fears-2508/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite" target="_blank" rel="nofollow">AInvest</a> 

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## Glossary

<a href="https://prime.greeks.live/area/51-attack/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite" class="glossary-item-box">
![Abstract spheres on a fulcrum symbolize Institutional Digital Asset Derivatives RFQ protocol. A small white sphere represents a multi-leg spread, balanced by a large reflective blue sphere for block trades](https://options.greeks.live/wp-content/uploads/2025/07/institutional-digital-asset-derivatives-rfq-protocol-dynamic-balance-for-optimal-high-fidelity-execution.jpg)

## 51% Attack

Meaning ▴ A 51% Attack describes a hypothetical or actual scenario within a decentralized blockchain network where a single entity or coordinated group gains control of over 50% of the network's total computational power, often referred to as hash rate for Proof-of-Work systems or staked assets for Proof-of-Stake systems. </a><a href="https://prime.greeks.live/area/proof-of-work/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite" class="glossary-item-box">
![Robust institutional-grade structures converge on a central, glowing bi-color orb. This visualizes an RFQ protocol's dynamic interface, representing the Principal's operational framework for high-fidelity execution and precise price discovery within digital asset market microstructure, enabling atomic settlement for block trades](https://options.greeks.live/wp-content/uploads/2025/07/institutional-digital-asset-derivatives-rfq-prime-os-engine.jpg)

## Proof-Of-Work

Meaning ▴ Proof-of-Work (PoW) functions as a cryptographic economic mechanism requiring participants to expend computational resources to validate transactions and append new blocks to a distributed ledger. </a>

**Tags:** [Network Security](https://options.greeks.live/area/network-security/), [Consensus Model](https://options.greeks.live/area/consensus-model/), [Mining Pool Centralization](https://options.greeks.live/area/mining-pool-centralization/), [51% Attack](https://options.greeks.live/area/51-attack/), [Transaction Censorship](https://options.greeks.live/area/transaction-censorship/), [Hashrate Control](https://options.greeks.live/area/hashrate-control/)	

## Discover More

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### [What Are the Emerging Risks in Information Leakage Stemming from New Communication Technologies and Remote Work?](https://options.greeks.live/question/what-are-the-emerging-risks-in-information-leakage-stemming-from-new-communication-technologies-and-remote-work/)
![The image depicts two intersecting structural beams, symbolizing a robust Prime RFQ framework for institutional digital asset derivatives. These elements represent interconnected liquidity pools and execution pathways, crucial for high-fidelity execution and atomic settlement within market microstructure. The intersection highlights cross-market price discovery and multi-leg spread capabilities, underpinned by algorithmic trading protocols.](https://options.greeks.live/wp-content/uploads/2025/07/prime-os-cross-market-execution-architecture-for-digital-assets.jpg)

The decentralization of work mandates a data-centric, Zero Trust security architecture to mitigate information leakage risks.

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This event underscores the critical need for robust hot wallet security protocols within centralized exchange architectures to preserve capital integrity.

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This integration provides institutional investors with a regulated pathway to yield generation and network participation within established market structures.

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### [What Are the Primary Data Security Concerns Associated with the Cat Database?](https://options.greeks.live/question/what-are-the-primary-data-security-concerns-associated-with-the-cat-database/)
![A symmetrical, multi-faceted digital structure, a liquidity aggregation engine, showcases translucent teal and grey panels. This visualizes diverse RFQ channels and market segments, enabling high-fidelity execution for institutional digital asset derivatives. It represents a Principal's operational framework for price discovery and atomic settlement of multi-leg spreads.](https://options.greeks.live/wp-content/uploads/2025/07/precision-liquidity-aggregation-engine-for-digital-asset-derivatives-trading.jpg)

The CAT database's primary security concerns are the unprecedented scale of data aggregation and the inclusion of sensitive PII.

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### [What Are the Primary Challenges in Maintaining an Accurate IP Whitelist across Multiple Brokers?](https://options.greeks.live/question/what-are-the-primary-challenges-in-maintaining-an-accurate-ip-whitelist-across-multiple-brokers/)
![A complex abstract digital rendering depicts intersecting geometric planes and layered circular elements, symbolizing a sophisticated RFQ protocol for institutional digital asset derivatives. The central glowing network suggests intricate market microstructure and price discovery mechanisms, ensuring high-fidelity execution and atomic settlement within a prime brokerage framework for capital efficiency.](https://options.greeks.live/wp-content/uploads/2025/07/institutional-digital-asset-derivatives-rfq-protocol-high-fidelity-execution-5.jpg)

The primary challenge is managing the architectural conflict between static security lists and dynamic broker IP infrastructures.

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### [What Are the Primary Technical Challenges in Implementing a Ptp Synchronized Surveillance System?](https://options.greeks.live/question/what-are-the-primary-technical-challenges-in-implementing-a-ptp-synchronized-surveillance-system/)
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A PTP-synchronized surveillance system's primary technical challenge is achieving microsecond-level accuracy across a distributed network.

- 
### [What Are the Technological Prerequisites for Implementing a Real-Time Information Leakage Detection System?](https://options.greeks.live/question/what-are-the-technological-prerequisites-for-implementing-a-real-time-information-leakage-detection-system/)
![Abstractly depicting an Institutional Grade Crypto Derivatives OS component. Its robust structure and metallic interface signify precise Market Microstructure for High-Fidelity Execution of RFQ Protocol and Block Trade orders. The angular teal plane represents a transparent Liquidity Pool driving Price Discovery and Atomic Settlement.](https://options.greeks.live/wp-content/uploads/2025/07/principals-integrated-crypto-derivatives-rfq-protocol-architecture.jpg)

A real-time information leakage detection system requires an integrated architecture of data-aware and behavior-aware security controls.

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### [What Are the Primary Targets of a Low and Slow Attack?](https://options.greeks.live/question/what-are-the-primary-targets-of-a-low-and-slow-attack/)
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A low and slow attack targets the finite stateful resources of a server, like connection threads, by using protracted, low-volume traffic to cause systemic exhaustion.

- 
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Recent market events underscore the critical need for robust network security protocols and diversified institutional access pathways within the digital asset ecosystem.

---

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---

**Original URL:** https://options.greeks.live/news/monero-network-faces-51-hashrate-control-and-reorganization-fears/
