The data breach at Target was significantly broader than originally reported: The company said Friday that 70 million customers had information such as their name, address, phone number and e-mail address hacked in the breach. Target said the personal data stolen could affect its past shoppers -- not just those who have visited the store recently.

Target Corp and Neiman Marcus are not the only U.S. retailers whose networks were breached over the holiday shopping season last year, according to sources familiar with attacks on other merchants that have yet to be publicly disclosed.

Smaller breaches on at least three other well-known U.S. retailers took place and were conducted using similar techniques as the one on Target, according to the people familiar with the attacks. Those breaches have yet to come to light. Also, similar breaches may have occurred earlier last year.

http://www.reuters.com/article/2014/01/12/us-target-databreach-retailers-idUSBREA0B01720140112?feedType=RSS&feedName=technologyNews