If you suspect that you are a victim of identity theft, you should report it to the credit bureaus as soon as possible. You can do it on each bureau's website by clicking on the “Report Identity Theft” link. Alternatively, you can call them directly. It's also a good idea to file a report with the Federal Trade Commission (FTC) and your local police department. Additionally, you may also want to place a fraud alert or freeze on your credit reports to prevent any further fraudulent activity.