From what I understand, the primary mode of 51% attack is controlling 51% of hash power, such as renting a lot of GPU for a short term attack. This gives you th

From what I understand, the primary mode of 51% attack is controlling 51% of hash power, such as renting a lot of GPU for a short term attack. This gives you the ability to censor the network, rendering it near useless and probably crashing the value of BTC. If the attacker has shorted BTC it may be profitable to crash the price.