A forgery is a fake or illegal copy. These crimes related to forgery include: Credit Card Fraud.Please select the appropriate box: Signature Forged: My signature on the face of the check(s) listed below is a forgery. Anne Smith owns Forensic Forgery Detection, a registered Orange Owned business. What Is the Punishment for Forging a Signature on a Check? What Is the Difference Between Forgery and Counterfeit?