2 out of 3 Credit Card Holders In The US Impacted By Target Data Breach

This is a data breach of unprecedented scale - with Target's 'discovery' of a second batch of data that might have been breached, the total number of impacted cardholders has reached 110 million - or two-thirds of all creditcard holders in the US (Source)

This comparison might not be accurate, but definitely helps us digest the scale of the data breach in terms of numbers.