Internet.

                   Internet is a worldwide system of computer networks united to store and transmit information. 
        Internet helps us to find the right information in the network, to communicate with people on the network, to find work, earn money, gives useful tips to become popular on the web. Internet helps students to create online projects and update the Internet itself.
The Internet can be dangerous with all sorts of intruders, hackers, maniacs, censorship, viruses, by fraudsters, etc.