They were not hacks. They were leaks and the leaker or one of the leakers is dead with a bullet in the back.
4 people from the DNC died in about a 3 month period in the spring and summer. That is far too many to be a coincidence. The emails plainly show that the DNC is run like a mafia organization. If anyone is looking for a smoking gun on who might have affected the election, they would surely look into these 4 people otherwise they are being dishonest.