A person who claimed to be the cancellation card of Unicom took a photo of the front and back of the certificate and nodded his head. There is no card at the back. Is there a security risk in my infor

A person who claimed to be the cancellation card of Unicom took a photo of the front and back of the certificate and nodded his head. There is no card at the back. Is there a security risk in my information? If it is confirmed that it is a Unicom staff member, there will be no security risks of information leakage. The special delivery and activation services are all completed by the staff of our Unicom company. When the staff asks you to provide documents to help you activate, you also use our company's special system to see the specific operation from the side, so you don't have to worry about data security at all.