What is the reason for the theft of qq continuous messages?

Qq continuous messages were stolen for the following reasons.

1. The password is too simple and has been stolen.

2. Log in to phishing websites with real qq.

3. Receive files sent by strangers, open them easily, and be robbed of Q Trojans; Or other ways lead to computer fraud.

4. There is no password protection problem or the password protection problem is too simple.

5, often in the internet cafe Q.