In October 2024, the Bitcoin Core project disclosed a Denial-of-Service due to inv-to-send sets growing too large, which I authored, for Bitcoin Core versions before v25.0. I have a few notes and screenshots from my investigation back then that I want to persist here. In early May 2023, my monitoring infrastructure noticed this bug affecting mainnet nodes, which allowed me to pinpoint where the problem came from. Credit for working on a fix goes to Anthony Towns.
