Stopping a blockchain doesn’t always recover stolen funds – What actually happened when 3 networks pulled the plug

Three blockchain networks stopped producing blocks within four days. Each blockchain halt used different emergency powers, and Cronos alone also replaced part of its canonical history. Cronos said validators halted the network by consensus after an exploit affected Tectonic, restored the chain to state from before the incident, and resumed production from block 90,896,189. The…

OpenAI update shows new safeguards would have cut off 700 rogue AI agent swam 24 hours faster

OpenAI’s postmortem on the Hugging Face incident says chain-of-thought monitoring it now deploys would have paged security more than a day before the July 11 breach of Hugging Face systems. The company also says its largest planned frontier reinforcement-learning run remains on hold while smaller tests assess model behavior, validate safeguards and build more evidence…

Optimism pushes network speeds to 200 ms, but standard data feeds are dropping key information

Optimism is targeting 200 ms subblocks on OP Mainnet, cutting the preconfirmation interval from 250 milliseconds in a rolling change targeted for Aug. 31. Subblocks, formerly called Flashblocks, are incremental updates the sequencer sends while it is still building a normal block, giving apps feedback before that block is sealed. Related Reading Coinbase-backed Base unveils…