AI Uncovers Real Security Flaws in Bitcoin's Lightning Network

Developers of Core Lightning confirm AI found genuine software flaws and urge node operators to update quickly instead of shutting down.

Artificial intelligence has found real security flaws in a key piece of Bitcoin software — and developers are racing to fix them.

The team behind Core Lightning, software used to send Bitcoin payments quickly, confirmed this week that several vulnerabilities flagged by AI-generated reports are genuine. They are now preparing an emergency update.

What is the Lightning Network? The Lightning Network is a "second-layer" system built on top of Bitcoin. Think of it as a fast lane: instead of recording every small payment on Bitcoin's main network (which is slow and costly), Lightning handles payments quickly and only settles the final result on the Bitcoin blockchain (the permanent public record of all transactions). Core Lightning is one of the programs that powers this system.

What operators are being told to do:

Install the coming update promptly — and verify its digital signatures (a security check confirming the software is genuine and untampered).
If they can't upgrade, run the node in "--offline" mode instead of switching it off completely.
Older versions, like 26.04, will no longer be supported.

Why not just shut down? A node (a computer running the software) needs to keep watching the Bitcoin blockchain even if it stops accepting payments. This lets it react if the other party in a payment channel tries to unfairly "force-close" it and grab funds. A powered-off node cannot protect itself.

The bigger picture: AI is increasingly being used to hunt for weaknesses in crypto software.

In July, wallet maker Coinkite blamed AI for helping attackers find a flaw tied to millions of dollars in stolen Bitcoin.
Swap provider Boltz suspended service because attackers were finding bugs faster than developers could fix them.
A volunteer group called the Bitcoin Red Team reported 4,962 possible flaws across 390 Bitcoin projects, with 85 rated critical.

So far, Core Lightning hasn't said how many flaws it confirmed or whether anyone has exploited them. Details will stay secret for about two weeks to give operators time to update safely.

Bottom line: This shows both the promise and the danger of AI in finance — it can spot flaws to fix them, but attackers can use the same tools to cause harm.

This is an AI-generated summary. Read the original article at: https://decrypt.co/376714/ai-critical-flaw-bitcoin-lightning-warning