secretary of , michaelsecurity chertoff. co-author of the usa patriot act.een very public about its use on encryption. how much does apple compared to the rest of silicon valley? are all of these other tech companies taking as aggressive a stance? chertoff: a number of companies and after we filed briefs in support of apple in this case. been has traditionally focusing more on security and encryption of data rather than a business model that involves looking at the data and using it for marketing purposes. all the tech companies are in the same boat. not just a question of privacy that question of security. if you force people to create backdoors. you are creating security vulnerabilities that are going to hurt innocent people. : you have a new white paper out about the impact of encryption on law enforcement. the argumentake of that phones can't become a warrant proof space in america? chertoff: law enforcement has a very important job to do. i was part of it for many years. they need to collect as much information as they can. their system in this country