Quote from: darosior on Today at 12:53:35 PM

Quote from: d5000 on August 20, 2020, 05:57:05 PM

Possible problem: If the sender knew when you exchanged the commitment transactions and he cooperates maliciously with your channel partner, however, he could try to instantly spend the output in another transaction hoping it gets confirmed first than your transaction. This would be however a relatively risky attack.

How so ? The sender does not have a key in the multisig.

There's a time lock added to commitment transactions of whatever the dev sets it at but its normally between 24 hours and 2 weeks depending on how active the node is - so this type of attack could be mitigated.