This affidavit is made voluntarily for the purpose of establishing the fact that my signature is a forgery. 7. Do you know who forged your signatures?As a Notary, how do you stay impartial if the signer is your relative? Vendor must complete, sign, and notarize the "Affidavit of Fraudulent Activity" form on the following page. An "Affidavit of Forgery" is a notarized, sworn statement, attesting that the signature appearing on it is indeed a forgery. If you witness a fellow Notary committing a crime, find out how you can report it and what information you will need to provide.