If the signature is fraudulently used, the rights can be protected in the following ways: 1. Require fraudsters to immediately correct, take back and destroy documents with fraudulent signatures. 2. If the reputation is affected, you can ask the other party to restore the reputation, eliminate the influence, apologize and compensate for the losses. 3. If the other party's fraudulent signature act is suspected of fraud, you can report it to the public security. ...