Bitcoin_fake_transaction_vector76_attack_full_v... -

: Immediately after, the attacker broadcasts their pre-mined block to the network.

: High; requires significant hash power and precise timing. Bitcoin_Fake_Transaction_Vector76_attack_Full_V...

: The merchant/exchange loses the goods or currency, while the attacker retains their original Bitcoin on the main chain. : Immediately after, the attacker broadcasts their pre-mined

The attack combines elements of a and a Race attack by leveraging a pre-mined block. The attack combines elements of a and a

: Most modern exchanges and Bitcoin services mitigate this by requiring three to six confirmations before funds are cleared, making the cost of maintaining the fake chain prohibitively expensive for an attacker. Key Characteristics

: It relies on the deliberate creation of a fork where the exchange is kept on the "losing" side of the chain for just enough time to process a withdrawal.

: Automated payment processors or exchanges with low confirmation thresholds.