Well, thanks for the update!

This is certainly concerning, especially if you view this in the context of actually being a variety of DDOS attack... and it's a pretty good bet that "shaggroed" is driven by someone with a personal axe to grind against Hive-Engine co-founder "aggroed" if you extrapolate the greater meaning of "shag" from the perpetrator's name.

I'm sort of in favor of some "limits" on number of transactions... if we believe in the foundational notion that what we do here is ultimately "Proof Of Brain," then there's little need for any one account to transact more than once every few seconds. Or whatever interval seems reasonable. In other words, put a plug in the pipe upstream from where the chain can effectively become overloaded... a bit like a localized Cloudflare stop.

But I am not a technical person...