Subject: Re: [bitcoindev] A "Free" Relay Attack Taking Advantage of The Lack of Full-RBF In Core

From: Murch <[email-masked]>
Date: Fri, 19 Jul 2024 14:26:44 -0400

On 7/18/24 11:56, Peter Todd wrote:
> # Summary
> 
> This is a public disclosure of a vulnerability that I previously disclosed to
> the bitcoin-security mailing list.

It seems redundant to point out that some transactions are only relayed 
by a subset of a node population if there are multiple diverging mempool 
policies with significant adoption.

However, I concur that Bitcoin Core should match its default setting for 
`mempoolfullrbf` to the behavior of miners, and there appears to be 
palpable evidence that a supermajority of the hashrate has enabled 
`mempoolfullrbf`.

Murch

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