LDK fix blocks Lightning privacy probe tied to BTC funding
BROBROK News · Based on reporting by CryptoSlate ·
Lightning Development Kit (LDK) has a fix that prevents a probe from linking an unannounced channel to the Bitcoin output that funds it. The issue involved onion-message forwarding, where a successful lookup could confirm that two suspected nodes shared the same channel.
Key points
- The probe required connections to both suspected endpoints.
- It relied on a real SCID derived from the channel’s funding output.
- Before the fix, LDK could resolve the real SCID for an unannounced channel.
- The update blocks that lookup path for onion-message forwarding.
- Valid aliases still work for routing.
Why it matters
The bug created a privacy leak between onchain Bitcoin data and Lightning network activity. That matters for wallet operators and Lightning users because it could help reveal which nodes are connected to a hidden channel.
Original headline: “Bitcoin Lightning fix blocks a probe linking private channels to onchain funding”
Read the original on CryptoSlate
Summary and analysis written by BROBROK News from the original report. Read the full story on the source website. Not investment advice.