Foundation and Citadel21 reported drained Lightning nodes, but the total amount stolen and number of affected operators remain unknown.
BTCPay Server has temporarily restricted public remote connections to Lightning Network nodes running Lightning Network Daemon (LND) software after attackers exploited a critical vulnerability to obtain credentials and move funds.
BTCPay said the restriction prevents external wallets such as Zeus from connecting through a BTCPay Server domain or Tor onion address on Docker deployments. BTCPay said Lightning payments can continue and that it plans to restore the remote-access option when it considers it safe.
Version 2.4.2 installs LND version 0.21.1 and automatically regenerates the macaroon credentials on standard BTCPay installations. The project advised operators to check for unauthorized payments, unexpected channel closures, unfamiliar peers and discrepancies in their onchain or Lightning balances.
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