On malicious nodes and verifications in a shard


#1

What if a malicious user performs a Sybil attack of verification (not mining) - spawning a large number of non-mining nodes that verify and approve malicious transactions within a shard.
It does not cost much to create a lot of non-mining nodes, and if the number is huge enough it is very likely that a shard is full of them.


#2

If they are not participating in the consensus, then what damage do you expect them to do? They would only be ‘approving’ invalid transactions for themselves.