1. If it is a personal PC, it is recommended to redo the system first, and then format other disks, because the Trojans studied by hackers (such as gray pigeons) are all shelled, that is, they are free from killing, and only the whole formatted materials can solve them.

2. It is suggested that QQ should be set as a friend only after verifying or answering questions, and at the same time, it is also necessary to refuse the temporary conversation of strangers!