Bitcoin_fake_transaction_vector76_attack_full_v... Apr 2026

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

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 Bitcoin_Fake_Transaction_Vector76_attack_Full_V...

: 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 The attack combines elements of a and a

: 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. How the Vector76 Attack Works : Most modern

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