Why does my qq always send some advertisements by itself?

If it is found that the login of the security center is not operated by itself, it may be stolen.

First, you can modify the QQ password first.

Second, unlock the device in the mobile QQ settings.

Third, generally don't click on the link shared in QQ, enter the password of QQ account, login space, etc. (It used to be a link shared in a space or group. After clicking in, you are allowed to log in to QQ space. It will be stolen after logging in. Just try not to click on foreign links. )