Bitcoin core developer steps back from Lightning Network over 'hard dilemma'

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Bitcoin core developer steps back from Lightning Network over 'hard dilemma'
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Antoine Riard, a security researcher and developer, has decided to step down from the Lightning Network development team.

Antoine Riard believes the Bitcoin community faces a "hard dilemma" as a new class of replacement cycling attacks threatens the Lightning Network.Security researcher and developer Antoine Riard is stepping down from the Lightning Network’s development, citing security issues and fundamental challenges to the Bitcoin ecosystem.There's a lot of discussion about this newly discovered vulnerability on the mailing lists, but the actual mechanism is a bit hard to follow.

"I think this new class of replacement cycling attacks puts lightning in a very perilous position, where only a sustainable fix can happen at the base-layer, e.g adding a memory-intensive history of all-seen transactions or some consensus upgrade. Deployed mitigations are worth something in face of simple attacks, though I don't think they're stopping advanced attackers as said in the first full disclosure mail.

"Those types of changes are the ones necessitating the utmost transparency and buy-in of the community as a whole, as we're altering the full-nodes processing requirements or the security architecture of the decentralized bitcoin ecosystem in its integrality."

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