# Onion Message Jamming in the Lightning Network

**URL:** <https://delvingbitcoin.org/t/onion-message-jamming-in-the-lightning-network/2414>\
**Category:** Protocol Design\
**Tags:** lightning\
**Created:** [April 13, 2026, 5:13pm UTC](https://delvingbitcoin.org/t/onion-message-jamming-in-the-lightning-network/2414 "2026-04-13T17:13:42Z")\
**Posts on this page:** 1\
**Showing post:** 22

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**Author:** ![erickcestari](https://delvingbitcoin.org/user_avatar/delvingbitcoin.org/erickcestari/32/2007_2.png) [@erickcestari](https://delvingbitcoin.org/u/erickcestari)\
**Post date:** [July 30, 2026, 6:41pm UTC](https://delvingbitcoin.org/t/onion-message-jamming-in-the-lightning-network/2414/22 "2026-07-30T18:41:38Z")

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Thanks for explaining further. Two things I want to check before responding:

- This implies forwarding OM only to peers you have a channel.
- Is this reputation a separate metric from the channel-jamming one, or the same score?

And when does an OM cost reputation: only once the upstream peer trips a configured limit, or does every message debit something?

> [@brh28](#):
>
> My argument is, if a circuit is broken, the offending node’s reputation should be charged.

> [@brh28](#):
>
> I contend this attack is not free. The adversary has to do useful work to earn a reputation that is subsequently spent.

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