Gareth Pursehouse, 41, is accused of throwing celebrity therapist Amie Harwick to her death from the balcony of her Hollywood Hills home.
The information posted to a hacking forum did not include financial data. MGM Resorts said the intrusion into a server was detected last summer.
The scheme involved giving cash and cigarettes to the homeless for signatures during the 2016 and 2018 election cycles.
The Smith and Fay families, who were vacationing together, were driving Tuesday night when a pickup rear-ended their vehicle, causing it to roll over.
The activists rejected an offer from Syracuse University officials that would have reversed their suspensions if they ended the protest.