CNN CNN Newsroom With Carol Costello February 27, 2015 15:46:00
Of detect child pornography on facebook. it's very effective. >> it's not just algorithms they hire people to go through screens of material and flag it. there are systems in place for taking offensive material down. >> why aren't they doing the same thing -- >> it's a question of scale. they probably are doing this with isis as well. the problem is you know, if somebody sees a message and that gets spread if someone is spreading child pornography, usually they're not sharing that with friends. it's staying pretty close to the source. this spreads very quickly. the social media is very good at...