Timeline
- 8.5
Cosmos Hub Restarts; 1.23 Million ATOM Moved From Neutron Attacker Wallet
Cosmos Hub resumed producing blocks after a 24-hour-48-minute halt in block production. Separately, 1.23 million ATOM moved from a Neutron attacker wallet that had purchased voting power for 20,199 USDC and staked it 12 minutes before an expedited Neutron proposal closed. The incident combines a prolonged halt of a major network's block production with a governance attack in which voting power was acquired and staked minutes before an expedited proposal closed, exposing the last-minute mechanics of fast-tracked governance. The Hub produced no blocks for 24 hours and 48 minutes. The attacker spent 20,199 USDC to buy voting power and staked it 12 minutes before the expedited Neutron proposal closed, and 1.23 million ATOM has since moved from that wallet.
- 7.5
Cosmos Hub is back online, but Ledger users still cannot access ATOM
Cosmos Hub stalled at block 32,878,318 at 18:12 UTC on Sept. 8, and QuickNode reported its nodes back at the chain tip by 14:26 UTC on Sept. 9, with its own incident resolved at 00:24 UTC on Sept. 12. Ledger, however, opened a separate incident at 19:41 CEST on Sept. 8 and its status page still listed Cosmos (ATOM) as a major outage on Sept. 13, leaving users unable to view ATOM balances or transaction history, and unable to submit ATOM transactions through Ledger Wallet. This separates network-layer recovery from wallet-layer availability: the Cosmos Hub is producing blocks again, yet a widely used hardware wallet still cannot display balances or broadcast ATOM transactions for its users. It highlights how a single wallet vendor's service path can effectively freeze a user's ability to move funds even when the underlying chain is healthy, and it underscores the access and liquidity friction that hardware-wallet dependency introduces into self-custody. Ledger has not disclosed a cause or an estimated restoration time, and its last public update was posted at 16:12 CEST on Sept. 10. For users who need to move ATOM urgently, Ledger's incident notice points to its alternative-methods guide, listing Cosmostation and Keplr as compatible third-party interfaces that connect to a Ledger device by opening the Cosmos app and choosing the hardware-wallet connection option — a route that keeps the device in the transaction flow, which is fundamentally different from importing the recovery phrase into a software wallet, something users should never do.