hundreds of companies, home deo, neiman mark, and others victims of hackers. cyber crime cost the global economy as much as $575 billion. juniper research forecast by 2020, the cost of worldwide criminal data breaches will quadruple to 2.5 trillion. the reason for the scary forecast is clear. more of the data the world relies on is moving online, making us vulnerable to hackers that want to scam, spy and steal. when it comes to stealing from american consumers and businesses, credit cards are the key. americans have 1.2 billion credit and debit cards. credit and debit card fraud costs $6.2 billion. moneys they steal your credit card number, hackers that pose an invisible threat to privacy and security turn to something called the dark web, or the deep web, a world most of us have never entered, but more of us understand. marie snow took a guided tour of the dark web to show how vulnerable we are. >> welcome to the underground chatrooms of the dark web, where personal information is bought and sold. not only do you have person's name, date of birth; you have th

neiman marcus delay their pricing. are the ipo jitters a healthy adjustment? cathleen split will give us her take coming up. companies that miss the mark are getting punished. seagate and more. that's ahead in our blitz. you are watching cnbc first in business worldwide. >> iex is hosting a charities day today to support the wings over wall street fundraiser, which benefits research for als. all revenues from its block trades today will be donated to the fundraiser to help the muscular dystrophy association. our own john joins us now. doc, good stuff you are doing today. tell us about it. >> all right, judge. as you know, this is the firm that was talked about, written about in flash boys, and iex has doubles in volume since last year. they're doing 230 million shares a day now, and it's a who's who of who the investors are in this thing, judge. it's einhorn, abbingman, lobe, steve wynn and jim clark. bain capital and so forth. they have technology to level the playing field for the regular investors. that's why they're growing so fast. they're giving away an awful lot of money today for als research. >> they're developing the block tr