the author kim zetter. what was stuxnet? >> guest: it was used to attack irani and uranium enrichment plants. it was designed to speed them up or slow them down in order to degrade the level of uranium enrichment. >> host: what was unique about stuxnet? >> guest: it was very sophisticated. a virus designed to physically destroy something other than that it was very sophisticated, designed to increase and slow the speed of centrifuges but it also did this remarkable trick to make the operators of the plan think that the operations were perfectly normal. so that was something remarkable about it. one more thing was that stuxnet used what is called a zero day something unknown to the software vendor therefore no patch exists and are time-consuming and expensive to find the vulnerability. generally we see one zero day in an attack. in this we saw five. >> host: where and how was it developed? >> guest: we believe here and israel. this was a process that took a number of years to develop there were multiple teams working on it. w

the author kim zetter. what was stuxnet?

. >> host: and kim zetter is the author of this book "countdown to zero day." >> you're watching book tv television for serious readers. you can watch any program you see here online at c-span.org. >> the big idea of barack obama was the guy that would get rid of polarization change politics take us out of this red and blue. he was not able to do that. there is there is an argument to say circumstances did not allow it. this is not the presidency he thought he would half. have. on september 152008, what he thought he would do, two different things, and this was thrust upon him, no time to change washington. we we had to save the american economy. .. >> then speaker of the house of representatives denny hastert house of representatives denny hastert sat down with brian lamb in 2004 to discuss his book, "speaker" on booknotes. representative hastert recounted his years as a civics teacher, football coach and member of the u.s. house of representatives. he also discussed how we handle the daily responsibilities of the house immediately after the september 11 terrorist attacks. watch for