Wanted to add this tidbit: Hive has no ninja-mine; the largest holder has 3%. It takes roughly 30%+ to take out the top witnesses now. The exchange attack (Binance, Huobi, Polo) powering up users' funds for 3 months, and using it to overthrow the network has been solved. Any newly powered up stake takes 1 month before it is allowed to vote in governance. Any exchange attack now will not only lock their funds for 4 months if they wish to attack the network, but we would see it from a mile away.

Furthermore, I don't even think you can buy 30% of the liquid Hive in existence if you wanted to. If someone tried to attack, it would make us all very rich; if they were successful, we would be so rich that we could easily have resources to fork again, dump the token the attacker is buying and getting a free airdropped token like last time. Many Hivers doubled their net worth during the hostile takeover, selling their Steem and keeping their Hive for free. Without the ninja-mine, such an attack would be nearly impossible. It's an attack I welcome wholeheartedly.