TJX Data Theft Began In 2005, With Data Taken From 2003
Written by Evan SchumanFebruary 21st, 2007
Cards issued by European banks when used online cross border don't usually support AVS checks. So, when a European card is used with a billing address that's in the US, an ecom merchant wouldn't necessarily know that the shipping zip code doesn't match the billing code.
-Marc