>So, how were these personal details obtained?<
The university knows the personal details of every club member involved. It either divulges the info or the entire university gets put on the blackball list. It’s probably cleaner, legally, to do a blanket ban anyway.
They started the cancel culture. Our side gets to play that game too. When they stop, we stop.
EC
That may be the big smoking gun in all of this.
IF the doxxing came from seedy means, eg hacking into databases, etc, then the dozers look Bad.
BUT….if Harvard gave away names, email addresses etc of club members because that is Their Policy, then BOOM.