Lightning's (other) Toxic Waste Problem
summary
Local Lightning node software is retaining full routing logs for years, storing entries like 198,995 sats payments and timestamps even after channels disappear, which lets a cloud provider reconstruct flows and defeat onion routing. Tor and privacy VPNs avoid this with ephemeral RAM or no logging, and Lightning already has encrypted watchtower and secret-derivation options so long retention is unnecessary. A bounty of 420,000 sats is offered for an LND plugin to delete old records, and CLN reportedly has a delete option though behavior varies between implementations.
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