>> i think there has to be two things. i think we have to take responsibility for what we sign up for and be careful and mindful. but i do think we have to level the playing field with some laws. you know, 100 years ago when photography was invented, it created new threats to privacy, and ultimately the law changed. interestingly, chris, right now the supreme court has taken some cases that have demonstrated they're now beginning to look at whether the law has to change again. >> the carpenter case with the police, about their needing a warrant to get your cell data. >> exactly, because what the court's now saying is, you know, it's not just about keeping your data hidden. it's about who controls the data after it's been collected. i think that's an important step forward. >> with opportunity comes responsibility. the book is "exploding data, reclaiming our cybersecurity in the digital age." secretary chertoff, thank you. while we are in hand shake mode, please promise to come back and help us understand what happens at the summit. appreciate it. so another war to keep your eye on is the escalating