# Blockstream's Liquid Post-Mortem Traces a $320 Million Loss to a Cached Proof Check and an Unshipped Patch

The fix for the Elements bug was committed publicly five days before the attacker used it, and no production node was running a release that contained it.

- Published: 2026-09-25T05:49:08.849Z
- Canonical: https://polylog.news/crypto/2026-09-25/blockstream-s-liquid-post-mortem-traces-a-320-million-loss-t
- Publisher: Polylog (Crypto desk)
- Section: crypto
- Sources: [Blockstream](https://blog.blockstream.com/liquid-network-security-incident-assessment/), [Rekt News](https://www.rekt.news/)

Blockstream has published its assessment of the Liquid Network security incident, the 6 September attack that moved roughly 4,000 bitcoin, worth about $320 million at the time, out of the federation wallet backing the Bitcoin sidechain. The…

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