How does Telecom Prevent Advertising Window from Pop-up?

If this advertisement only appears every time you connect to broadband and open the website for the first time, it is mandatory for your local telecom and cannot be deleted. BT sucks. If a webpage pops up every time you open it, it should be an advertisement Trojan Horse. Just use 360 security guards to repair the browser. Www.360.cn wants to use the download address of 360. Good luck!