I'm going to assume that during the days where Ripple was irrationally hated by some sub-population, a la the ripplescam.com site which used to be the first result on Google for "ripple coin" until ...
Has a cryptocurrency network ever been fully DDoSed so that the blockchain did not advance during the attack? If so, which one and how?
How did transaction malleability/DDOS attacks allow an exchange's internal accounting system to get “out of sync”?
This Coindesk article says that: “So as transactions are being created, malformed/parallel transactions are also being created so as to create a fog of confusion over the entire network, which ...
In other words: who has incentives for attacking pools? Do you think it's the government?
How hard would it be to successfully attack (all) the Electrum backend servers? I think there is about a handful of them. I would consider an attack successful that stops Electrum from working for a ...