1. Ask the person who fraudulently uses the signature to immediately correct, restore and destroy the file whose signature is fraudulently used.

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, it can report the case to the public security organ, which will handle it according to law after investigation.