Exploit found draining funds from Lightning Network payment servers

Someone found a flaw in the software running Lightning Network nodes — these are servers that let people send small, fast Bitcoin payments without waiting for the main blockchain. Attackers used the flaw to pull funds out of vulnerable servers, similar to past incidents that have hit other pieces of Bitcoin's supporting infrastructure.

This affects businesses and services running Lightning nodes, not everyday people just holding Bitcoin in a wallet — but it's a reminder that the tools built on top of Bitcoin can have bugs even if Bitcoin itself is unaffected.

If you don't run a Lightning node or use a service that does, there's nothing to do. If you do use Lightning-based services, it's worth checking whether the provider has confirmed they're patched or unaffected.