Re: [bitcoin-dev] Denial of Service using Package Relay

2023-07-06 Thread Andrew Chow via bitcoin-dev
On 07/06/2023 12:22 PM, alicexbt via bitcoin-dev wrote: > 1) Register input in A > 2) Double spend same input with zero fee to your own address > 3) Register unconfirmed UTXO from 2 in B Why would unconfirmed inputs be accepted in a coinjoin? That seems unsafe, regardless of package relay. The

[bitcoin-dev] Denial of Service using Package Relay

2023-07-06 Thread alicexbt via bitcoin-dev
Hi Bitcoin Developers, I think its possible to use [package relay][0] for DoS attack in coinjoin. A few other projects could also be affected by packages. Since its a proposal that adds new P2P messages, transaction relay etc. its as important as any soft fork. Let me know if I am missing somet