It is a good question without a really easy answer, but maybe this will help. "Danger of" often means that a bad result might happen. Example: If you don't study harder, you are in danger of getting bad grades. He is in danger of getting fat because he eats so much. You can't use "danger from" in these situations because the danger is a bad outcome, not a bad or evil person who might hurt you. "Danger from" often means that some person or thing may try to hurt you. Examples: She is in danger from her ex-husband who wants to hurt her. The country is in danger from terrorists. You can't use "danger of" in these situations, where the danger is a person that wants to hurt you. Part of the difference may be this: "danger of" often refers to a potential FUTURE danger. "Danger from" often refers to a PRESENT danger.

normally , in danger OF is how we do that. He is in danger OF failing this semester. 1. When you have cancer, there is always the danger OF the cancer spreading to other organs. 2. When text messaging while driving , you are in danger OF causing an accident . DANGER FROM is see occasionally - for example "He is in danger FROM being outside in the cold weather This is less common I think . "

Hi, I think different prepositions imply different "nuances": --- a danger OF internet is something intrinsically caused by the structure itself of the web, for example the fact that we might never know the identity of a person we have known. --- A danger FROM internet is a negative event, actively caused by someone -- and here the list is long. Of course, a danger FROM internet is largely based on a danger OF internet. I'd like to see if my idea is right.

Danger of the Internet -> Basically, it means that the Internet per se is very dangerous. Danger from the Internet -> The Internet is simply a knowledge base, but there are some dangerous things in it.