Liquid Network, a Bitcoin sidechain built and maintained by Blockstream, has temporarily halted its network after purported white-hat hackers took about 4,000 BTC, worth around $320 million, from the Liquid Federation wallet, the project said in a Sept. 6 statement.
We are aware of a security incident on @Liquid_BTC. Purported white-hat hackers have withdrawn ~4,000 BTC (~$320 million) from the Liquid Federation wallet. The @Blockstream team is working on contacting them on-chain with a signed message.
What we know so far is that the funds…
— Liquid Network 🌊 (@Liquid_BTC) September 6, 2026
Blockstream said the withdrawal was carried out through the SideSwap PAK, or Peg-out Authorization Key. Neither the key nor any other keys were compromised, the team added.
