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Network Attack

Definition ∞ A network attack is any malicious action directed at a blockchain network or its participants to disrupt its operation or compromise its integrity. These attacks can target the underlying infrastructure, consensus mechanisms, or individual nodes and users. The objective is typically to cause disruption, steal assets, or gain unauthorized control.
Context ∞ Discussions regarding network attacks in crypto news often highlight specific incidents such as 51% attacks, denial-of-service (DoS) assaults, or smart contract exploits. These events underscore the ongoing security challenges within the digital asset landscape. Observers should pay attention to the evolving sophistication of attack vectors and the effectiveness of defensive measures deployed by various blockchain protocols.

A sleek, metallic, modular blockchain infrastructure component, rendered in cool blue-silver, rests on a textured, foundational layer. Its robust, engineered panels signify a resilient DLT network, designed for high-performance consensus protocols. A translucent, crystalline sphere, symbolizing a secure digital asset or genesis block, is centrally mounted. This setup embodies a decentralized autonomous organization's core mechanism, enabling secure cold storage, cross-chain interoperability, and oracle network integration, crucial for Web3 network security.

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Monero Suffers 18-Block Reorganization, Exposing Double-Spend Risk

An unprecedented 18-block chain reorganization on Monero's mainnet demonstrates critical vulnerabilities to adversarial block withholding, threatening transaction finality.