Quote from: Perlover on October 14, 2015, 07:04:42 AM

Quote from: Quickseller on October 14, 2015, 06:48:34 AM

Quote from: shorena on October 14, 2015, 06:29:14 AM

Quote from: Zombier0 on October 14, 2015, 12:38:43 AM

I made some money on this attack, im happy

How would you have made money due to the attack?

Easy. Send a tx to yourself, use those inputs for a second transaction to someone else who accepts 0/unconfirmed transactions, then mutate the txid of the first transaction, making the 2nd transaction invalid, allowing you to double spend the 2nd transaction.

You could do a double-spending without this attack Tongue

This attack doesn't help in this...

It makes it much easier. More nodes will accept the mutated transaction then would accept a transaction that outright conflicts with an existing transaction in it's mempool so the chances of getting the mutated transaction confirmed are greater.