Exam 312-50v13 Topic 1 Question 663 Discussion

Actual exam question for ECCouncil's 312-50v13 exam
Question #: 663
Topic #: 1
You are Riley, an incident responder at NovaEx Crypto in San Antonio, Texas, tasked with investigating a recent double-spend reported by a retail merchant that accepts the exchange's token. Your telemetry shows that a reseller node used by the merchant received blocks only from a small, fixed set of peers for several hours and accepted a conflicting history that later allowed the attacker to reverse a confirmed payment. The attacker appears to have controlled which peers that node communicated with and supplied it a private chain until they were ready to reveal it. Which blockchain attack does this behavior most closely describe?

Suggested Answer: D Vote an answer

The attacker isolates the target node by controlling its peer connections and feeds it a manipulated private chain, enabling transaction reversals. This behavior is characteristic of an eclipse attack, which targets a node's network view rather than the entire blockchain consensus.

by Bill at Aug 09, 2026, 05:18 AM

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