[kodt]

And by what legal means would a private university access that data to connect it?

[DanBC]

If you're not posting under your confirmed real name, in a facebook group under the control of the private university, there's probably nothing they can do.

[std_throwaway]

What keeps them from doing it? Internet communication is not private. Everybody with access can record and sell it.

[thaumasiotes]

Reading a document dump from somewhere. Same way people accessed the Ashley Madison subscriber data.