i have read that if someone has more than 50% of all the hashing power on the network they could essentially start screwing with the system and destroy it. if this is true i don't understand why smart people who know a lot about security such as steve gibson don't acknowledge or talk about this?


obviously it would take a lot of effort/money that probably only a government could pull off. but isn't it possible and if it is possible why don't people talk about it more as it seem to be the only real threat to bitcoin.