‹ BackNewsValidators

Validators

MetaMask says infrastructure was affected in security incident, sees no direct threat to wallets
RippleX submits LendingProtocolV1_1 upgrade for XRPL validator vote
Anza proposes SIMD-0675 to schedule Solana validators by geography
Avalanche activates Helicon upgrade, says block validation speed can rise by up to 100x
Nansen says its staking validators ran seven years without a slashing event
Ethereum validator count reaches 890,000 as consolidation progress draws attention
Cosmos
2026-09-29 12:30:00

Why Cosmos Hub Stopped Producing Blocks for 25 Hours

Cosmos Hub halted block production on Sept. 22 after validators representing more than one-third of total voting power stopped participating, freezing the chain at height 33,086,740. The trigger did not originate on Cosmos Hub itself. The sequence began on Neutron, where a governance proposal titled AIATO: AI Agent Takeover was exploited through chain-level governance privileges in the wasmd framework, allowing attackers to reassign contract admin rights for apps including Astroport and Drop. Before Neutron stopped running, Cosmos Labs said the attackers had already moved assets across several networks, including roughly 1.7 million ATOM into Cosmos Hub, where the funds began moving through interchain liquidity routes. To prevent the remaining ATOM from leaving, some Cosmos Hub validators shut down their nodes. That pushed the network below the threshold needed to keep CometBFT consensus live. About four hours later, validators received a recovery plan built around a one-time state change. Cosmos Labs then prepared and tested a Gaia v28.3.0 patch. The patch moved 1,227,121 ATOM from the attacker address into a 4-of-6 multisig controlled by Nansen, Keplr, Enigma, Silknodes, Kiln, and Polkachu. Once validators representing more than 67% of voting power had installed the software, Cosmos Hub coordinated a restart at 12:00 UTC on Sept. 23. Roughly six minutes later, the state change executed at block 33,086,741 and block production resumed.

150
Why Cosmos Hub Stopped Producing Blocks for 25 Hours
Solana validators asked to prove 150 ms finality proposal works on a live network