Target has not revealed much regarding how their massive data breach occurred. To date they have disclosed the breach included 40 million credit cards and 70 million personal records. Target has only stated that the point-of-sale systems were compromised by malware.

So, now Target has updated that the scope of the data breach as being much bigger than the original 40 million credit cards and now includes information on more than 70 million customers including address, email, phone numbers.