alix: thank you, assistant attorney general john carlin. bel the u.k.he eu a good thing for the british economy? that is what the british mayor is advocating. next, chances of a brexit. ♪ tracy: i'm tracy alloway, "what'd you miss?" london mayor boris johnson testified this week. one of the main areas of focus is the upcoming brexit vote. he said the finance industry would flourish if england left the eu. i spoke with toby nangle, and we talked about what a brexit would actually look like. the thing about a brexit is that we don't actually know what we are looking at. there are so many varieties of brexit that it is hard from a market perspective -- we believe any outcome of those exit fromssions look negative various perspectives. but there are so many varieties of exit incompatible with one another that people are still pushing forward, so it is hard to make sense of. tracy: but we have seen markets react to the possibility. what are we seeing in terms of changes? toby: on the equities acai, a lot of the actions within sectors during with the loss of

we are joined now by john carlin, assistant attorney general.t the rsa conference in san francisco. it is all about security. thank you for joining us. you are right at the center of the debate between cyber security and privacy. on howo you come down much we should reveal in order to keep the nation safe? both.believe strongly in in the national security space, our job is to help support companies use strong encryption to protect their data from cyberattacks, spies, terrorists. at the same time, we need to be able to have access to some of that information through court orders in specific investigations of terrorism. i think the two are linked. in order to have the best security, we need both good encryption and the ability to use lawful court process. involvedou were very in the prosecution of the boston marathon bomber. would you have needed this software in order to do that? >> in almost every terrorism investigation, part of the investigation is finding information that is stored digitally. it might be information we need to get that is in

i want to thank my friend, attorney general loretta lynch for her leadership and guidance on this case and every case she oversees. out to thank john carlin assistant attorney general of the national security division and the folks in his office at work on this case. and of course the fe ever created the fbi. the sprawling investigation involve a lot of different fbi offices. i want to acknowledge and thank them all. the field offices of chicago, cincinnati, new york, phoenix and san francisco. i want to thank the fine men and women of my own office to make this case have been, especially tim howard and the supervisors michael friedlander and paul krieger. thank you all for all your work. that introduce you to the assistant attorney general, giancarlo. -- john carlin. mr. carlin: thank you. under his leadership there is no better partner in the country for the national security division than the southern district of new york. and is somewhat with friends and family in new york city i am grateful he is there and the prosecutors that are there to work against national security threats. i want to thank the fbi for their work on this investig

attorney for the southern district of new york and the assistant attorney general for national security john carlin. we are here to announce a major law enforcement action as part of our ongoing efforts to disrupt cyberthreats and protect our national security. today, we have unsealed an indictment against seven alleged experienced hackers employed by computer security companies working on behalf of the iranian government, including the islamic revolutionary arm corps. these seven individuals conspired together and with others to conduct a series of cyberattacks against civilian targets in the united states financial service industry that in total or all in sum cost the victims tens of millions of dollars. now, between late 2011 and mid-2013, the financial sector suffered a large-scale and coordinated campaign of distributed denial of service or ddos attacks. this is a particular kind of cyberattack in which multiple, compromised targets overwhelm a single system. through these attacks, the servers are 46 financial institutions flooded with traffic over the course of 176 days. as a result of this d

i also want to thank john carlin, assistant attorney general of the national security division, and alls office who worked on this case and brought us to this point. and of course, the fbi represented here by its leader, jim comey. the sprawling investigation here, as director comey already mentioned, involved a lot of different fbi offices. and i want to mention and acknowledge and thank them also. >> all right, that is preet bharara, the u.s. attorney of the southern district of new york, who along with fbi director james comey and u.s. attorney general loretta lynch are at the justice department announcing they are charging seven iranians with cyber attacks. eamon javers has been following this case. he joins us now from washington with some reaction. eamon, a lot of discussion to your earlier point about what message they're trying to send here. >> reporter: yeah, absolutely, sara. and the tension behind the scenes for the fbi and u.s. law enforcement here is always whether or not to go public with what they know about these attacks, how they were carried out and who executed them.