What are the risks of using the Lightning Network?

Lightning can lose you money through channel failure, not theft, so treating it like a pocket wallet is the mistake. The network is a set of payment channels between two parties, and your funds sit in a joint account with a stranger. If that stranger closes the channel with an old state, you can lose the whole balance unless you catch the penalty transaction in time.

That means running a watchtower service or staying online regularly, which most people don't do. Then there's routing: your payment hops through nodes, and if any channel lacks liquidity, the payment fails. You still pay a fee sometimes when that happens, which is infuriating.

Wallet choice matters more than the network itself. Custodial ones like Wallet of Satoshi hold your keys, and if they shut down, you have no recourse, I've seen it happen. Non-custodial like Phoenix or Breez keep you in control but require you to manage backups properly.

Old software is another trap; I once lost 0.02 BTC importing a backup into the wrong wallet after an update. So the honest answer is keep only what you can afford to lose on Lightning, use it for small payments, and move anything serious back to cold storage. It's legitimate but experimental, and the risks are real, just different from what the headlines say.

Biggest risk is channel closure, not hacking. You need liquidity on both sides, and if you're offline when the other party closes maliciously, you lose it unless a watchtower catches it. Don't keep more than a few hundred kroner on there. Custodial wallets are fine for small stuff, non-custodial for control. Lightning is legit but still experimental.

Old software is the killer. Updated my node once, imported a channel backup into the wrong wallet, lost 0.02 BTC instantly. Keep backups separate and test them before you need them.

Wallet of Satoshi is fine for small amounts, but I kept 5000 kr on a custodial wallet that shut down overnight. Never got it back. For anything over a few hundred, go non-custodial, Phoenix or Breez. Learnt that the hard way.

A channel is a joint account with a stranger, treat it that way. Had mine closed by the other party while I was offline for a week, watchtower service caught it and I got the full balance back. Without it, that money was gone. It's safe if you understand the setup.

Routing failures are the real annoyance. Measured it on a mid-size node, about 1 in 5 payments failed when channels had low liquidity. You pay the fee anyway sometimes. The practical risk isn't hacking, it's the frustration and the small loss on failed attempts.