Diphtheria (dif-THEER-e-uh) is an infection of the lining of the upper respiratory tract (the nose and throat). It is a serious disease that can cause breathing difficulty and other complications, including death.
The Internet is not synonymous with World Wide Web. The Internet is a massive network of networks, a networking infrastructure. It connects millions of computers together globally, forming a network in which any computer can communicate with any other computer as long as they are both connected to the Internet.
A typical bot net may consist of tens of thousands of computers that are all controlled by a single command and control terminal. Hackers love using bot nets because it allows them to combine the computing power and network resources of all the computers in the bot net to attack a single target.