1. Authentication: Ask the other party to provide their own name, law firm name and contact information. If the other party is unwilling to provide or the information provided is unclear, it may be a fraudulent phone call.
2. Don't disclose personal information: Don't disclose personal sensitive information on the phone, such as ID number and bank account number. Legal lawyers will usually contact you in formal legal proceedings, not telephone threats.
3. Consult a professional: If you are in doubt about the authenticity of the telephone, it is recommended to consult a professional lawyer or relevant institutions for legal advice and help.