1. the co-option of another person's personal information (e.g., name, Social Security number, credit card number, passport) without that person's knowledge and the fraudulent use of such knowledge;
WordNet (r) 3.0 (2006):
identity theft
n 1: the co-option of another person's personal information
(e.g., name, Social Security number, credit card number,
passport) without that person's knowledge and the
fraudulent use of such knowledge