How Does Increasing the Confirmation Count Mitigate a Double-Spending Attack?

A double-spending attack requires the attacker to reverse a transaction by mining a longer, private chain. When an exchange increases the required confirmations, it means they wait for many blocks to be added after the deposit block.

Each new block makes the deposit transaction deeper in the chain. Reversing a transaction buried under many blocks becomes exponentially more difficult and expensive for the attacker, as they must re-mine all subsequent blocks.

This significantly increases the economic barrier for the attack.

How Does Transaction Confirmation Time Impact the Risk of a Double-Spend?
What Is Double-Spending and Why Is a 51% Attack Necessary to Execute It?
How Does Increasing Confirmation Requirements Mitigate Risk?
What Is Double-Spending, and Why Is It the Main Concern of a 51% Attack?
How Does the Concept of ‘Time Value of Money’ Apply to an Attacker’s Cost of a Prolonged 51% Attack?
Why Does the Number of Required Confirmations Increase with Transaction Value?
Why Is Transaction Confirmation Important to Prevent Double-Spending?
How Do Centralized Exchanges Prevent Double-Spending before Blockchain Confirmation?

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