Privacy is dead wrote:
But when you agreed to use the app, they also took all your friends' data as well. You consented on behalf of your friends for CA to have their data. I'm sure that is not legal.
You contact list is not the private information of the people on it, it's yours, and you have the right to tell others who is on it if you choose. There is no legal safeguard for someone to demand that you not tell anyone they're on your list.
Getting names off your contact list doesn't give someone access to your contacts' data beyond what their names are and the fact that they know you. They still have to get their permission to see their non-public information.
But this is way more overblown than that. If you only knew how many lists your name was on already, before Facebook data mining was possible... and when it comes to elections, that starts with the voter rolls, which every member of the public has the right to obtain. Registration records are the most valuable thing for a campaign deciding whom to target: name, street address, party affiliation, and how long affiliated. The major parties go well beyond that and record every bit of contact with their support base they've ever had, building up a long and detailed history. Social media data is like looking for a needle in a haystack by comparison, and a waste of time and precious resources.
Closer to scandalous would be the Sanders campaign turning its email list over to Clinton.