If someone else pretends to be my signature without my knowledge, I won't ratify it, I won't bear legal responsibility, and the signatory will bear the responsibility; If it is approved, I should bear the responsibility. Signing on behalf of the agent is the behavior. If I don't know, I have no right to represent and I don't bear legal responsibility. However, if I know that someone else signed my name without denying it, or that I ratified it, the signature is binding on me and I should bear legal responsibility. Article 66 of the General Principles of Civil Law? If there is no agency, beyond the agency or after the termination of the agency, the principal can bear civil liability only after ratification by the principal. If the act is not ratified, the actor shall bear civil liability. Knowing that someone else has committed a civil act in my name without denying it is regarded as consent.