What is the high-risk warning and three-star fraud prevention?

This is a security reminder service for SMS and phone fraud.

When a user receives a short message or phone call, if the short message or phone call is judged as high-risk information by the system, three asterisks will appear next to the short message or phone number in the user's phone call record and short message list, and there will be a high-risk warning message.

This service is jointly launched by China Mobile, China Telecom, China Unicom and other operators, aiming at strengthening users' information security protection.