1, immediately install and upgrade the latest antivirus software, such as: install 360 guardian antivirus, and thoroughly check the computers you frequently use on QQ number:

2, change the computer IP and firewall settings encryption to prevent hackers from stealing their passwords.

3. Uninstall QQ and reinstall it.

4. Log in to QQ again, and then update your QQ friend information.

5. Reinstall the computer system. If the severely poisoned system has been confirmed, it is recommended to re-install the formatted system; If it can't be installed, take it to the computer maintenance department to reinstall the computer system.

6. Please change the QQ password immediately after cleaning the virus or reinstalling the system. Change the password and improve the security level. If you change the password, you cannot change the same password. The security level is to open the mobile phone binding, mobile phone token, secret order and so on.