Synthetic Identity Fraud
A fraud in which criminals create fictitious identities by combining real and fabricated personal data — often a real Social Security or National Insurance number with invented other details.
Also known as: synthetic ID fraud, frankenstein ID, hybrid identity fraud
Last reviewed: 1 June 2026
Unlike traditional identity theft that steals a real person's complete identity, synthetic fraud assembles a new, plausible fictional identity. Typically, criminals use a real identification number (often belonging to a child, elderly person, or recent immigrant with minimal credit history), pair it with a made-up name, date of birth, and address, and then slowly 'age' the synthetic identity by opening small accounts, paying on time, and building a credit file.
Once the credit score is sufficiently established, the fraudster executes a 'bust-out': maxing out every available credit line across multiple lenders simultaneously, then vanishing. Because no single real victim has a complete stolen identity, the crime is harder to detect, and there is often no individual reporting the fraud promptly.
Synthetic identity fraud is a particular problem for lenders and credit bureaux. Detection relies on pattern analysis — such as a Social Security number that appears with multiple different names, or a credit file that shows no physical footprint (no utility bills, phone contracts, or address history).
Examples
- A child's Social Security number is combined with a fake adult name and address; a credit card is obtained, used lightly for two years, then maxed out and abandoned.
- Multiple loan applications are filed simultaneously using the same ID number but slightly varied names across different lenders.