what kind of regulations would serve this particular scenario?

The hack is purely technical in nature.

This could have been the FED's system that got compromised and the response would have been the same.

Oh, no, sorry - it wouldn't because we wouldn't even know it happened as FED is fully opaque while crypto is quite transparent.

In that sense crypto is much more democratic because at least there's some ability for the public to audit it. With FED there's none.