Break the law. According to the information in the Civil Code of People's Republic of China (PRC), stealing other people's signatures constitutes infringement and is an illegal act. No organization or individual may infringe upon the name right or name right of others by stealing or counterfeiting. If others steal their signatures, they shall take timely measures to safeguard their own rights and interests, including complaining to relevant institutions or seeking legal channels to safeguard their legitimate rights and interests.