Bitcoin developer Antoine Riard disclosed a new attack method "replacement loop attack" in the Bitcoin Lightning Network. However, this attack method has no actual application cases, but the flaw may affect a series of other Bitcoin protocols and applications. Such as coinjoins, peerswap and batch payments. (The Block)
According to previous news, Slow Mist Cosine’s replacement loop attack on the Lightning Network stated that the attack is complex to implement and it is recommended that the project party establish a channel with trusted upstream and downstream.