last month, target reported than hackered had compromised the security of 40 million credit and debit card users. this week, it was announced that the breach affected an additional 70 million american people. that means the security impact affected 1 in 3 americans. the breach not only stole credit card information including card number, expiration date, and security codes, but also included data such as home addresses and e-mail addresses. greg has to assure customers target will cover the cost of fraudulent activity. >> zero liability means target is paying for any possible fraudulent activity on anybody's credit card. >> target claims the hackers obtained the information tlum malware in the credit card reading system. >> several banks are now sending customers new debit and credit cards due to the hack. jp morgan reportedly sending out 2 million replacement cards to