Bitcoin_fake_transaction_vector76_attack_full_v... Here

: Once the attacker finds a block, they quickly send a second transaction—sending the same coins from Address A to the exchange's Address C—directly to the exchange's node.

: Automated payment processors or exchanges with low confirmation thresholds.

: Once the exchange credits the account based on that one confirmation, the attacker withdraws the funds. Meanwhile, the rest of the network follows a different chain (where the original block was orphaned), and the transaction to the exchange is ultimately rejected as a double spend. Technical Context & Mitigation Bitcoin_Fake_Transaction_Vector76_attack_Full_V...

: 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.

: The merchant/exchange loses the goods or currency, while the attacker retains their original Bitcoin on the main chain. : Once the attacker finds a block, they

: High; requires significant hash power and precise timing.

The attack combines elements of a and a Race attack by leveraging a pre-mined block. Meanwhile, the rest of the network follows a

The (also known as a one-confirmation attack) is a sophisticated form of double-spending in Bitcoin that exploits the way nodes handle "orphaned" blocks and transaction confirmations. It allows an attacker to trick a recipient (often an exchange) into accepting a transaction that will ultimately be invalidated. How the Vector76 Attack Works