Definition ∞ A network hijack is a malicious operation where an unauthorized entity gains control over a communication network or a blockchain’s consensus mechanism. This can involve intercepting traffic, rerouting transactions, or manipulating the validation process to achieve illicit gains. Such an event severely compromises the security and operational integrity of the affected network.
Context ∞ Discussions surrounding network hijacks are critical when evaluating the security of blockchain protocols and decentralized systems against sophisticated attacks. News in this area often relates to potential vulnerabilities in consensus algorithms or network infrastructure, underscoring the constant need for robust security measures to prevent unauthorized control.
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