Valid transactions that occurred during the affected blocks were not impacted and remain on the main chain, the Litecoin development team said.
Litecoin, a layer-1 proof-of-work (PoW) blockchain network, was hit by a “zero-day” vulnerability on Saturday, which caused a 13-block reorganization of the chain, according to the Litecoin team, while other developers say the bug may have been previously known.
The bug caused a denial of service (DoS) attack on mining pools with newly updated software, suppressing their hashing power, according to an update from the Litecoin team.
This allowed older nodes to “peg out” coins to decentralized exchanges and cross-chain swap protocols, resulting in invalid transactions being posted to the network’s MimbleWimble Extension Blocks (MWEB) privacy layer, according to the team.
