Why does my internet shut down and reboot while surfing the net?

Question

Why does my internet shut down and reboot while surfing the net?

Answer 1

may be spyware.

Answer 2

This is a ridiculously vague and un-explained question. You provided no information, you did not say if this happens all the time and you did not specify what things you use when browsing the web - what browser, time etc.

So, without any information at all, nobody can possibly answer your question