# Cosmos Hub validators halt the chain for a day to recover 1.23 million ATOM after a Neutron governance attack

The attacker spent 20,199 USDC to buy and stake enough NTRN to pass a proposal with 82% support, then used reentrancy to take control of 11 contracts.

- Published: 2026-09-26T05:50:55.881Z
- Canonical: https://polylog.news/crypto/2026-09-26/cosmos-hub-validators-halt-the-chain-for-a-day-to-recover-1
- Publisher: Polylog (Crypto desk)
- Section: crypto
- Sources: [crypto.news](https://crypto.news/cosmos-hub-secures-1-23-million-atom-neutron-attack/), [CryptoSlate](https://cryptoslate.com/dormant-whale-moves-380m-bitcoin-leaving-the-sale-question-unanswered/)

Cosmos Hub validators stopped producing blocks for about 24 hours and 48 minutes, then restarted the chain with 1,227,121 ATOM moved out of an attacker's wallet and into a recovery address controlled by four of six signers. Cosmos Labs said…

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