The risk hasn't been stated clearly - it's now a classic arms race.
A well-resourced organization trains their own, highly persistent, highly-capable, safeguard-free, and unaligned model and deploys it on 1000x GPUs with a message board and a nearly-impossible objective. No infrastructure is safe. No organization is safe.
You need your own 1000 bot swarm to scan, identify, and defend against the threat, which means investing in infrastructure and capabilities to defend. Cost and complexity go up. Risk and attack surface goes up.