from "usa today." a couple phrases there. he says this is a grave breach. it is, but he knew about this, laura, three years ago. >> yeah. that's what i think is bother some to users and people that have been following this, have been wondering, you know, it's great that you're going to try to stop and fix this problem, but probably time to stop would have been when you discovered it. facebook, you know, acknowledged that, knew about this app, psychology app. using data from people who had thought they were engaging in some kind of personality quiz. then passing it on to a firm who had different motives and not discloses that at all. >> trace: 270,000 people are the ones that signed up for this app. 270,000. you had their user, their