Communicating with the Internet brings not only benefit and pleasure. Even the experienced user waylaid the dangers that could take away from him and time and nerves, and often money. Computer criminals use the Internet to steal information, retrieve the illicit profits, causing harm to competitors. Great harm brings destructive, sometimes completely pointless activities of hackers and other online bullies.
The largest attack on the Internet, computer viruses. This program is able to reproduce by infecting other programs, including its code. A virus can destroy or modify information on the infected computer, interfere. The so-called network worms and send copies of themselves to create a network of its innumerable copies, littering and overloading communication lines that sometimes simply paralyze network.
A special kind of viruses are Trojan horses (Trojans). Once in the computer, they disguise themselves as harmless programs. At certain points the Trojans are activated and begin to malicious work – intercept passwords and access codes, send information to his master, constantly display the advertisements and the like.
The Internet is a fertile environment for the spread of viruses. In just a few hours the viral epidemic can cover the entire globe, infecting millions of computers and causing extensive damage. Great danger especially for Internet servers are hacker attacks. Hackers (hacker – cracker), intend to crack the protection for your computer using the operating system’s weaknesses, or to organizing large numbers of requests that the server is not able to process.
Hacker’s goal is to gain control over the computer, stealing classified information, any interruption of the site or damage information on it. Computers often break from the sport, or for the demonstration of his skill. Sometimes hackers get good work in computer security. Methods of protection from viruses are constantly being improved, while pessimists predict the death of the Internet by pruning obsolete it “worms” of the new generation, runaway creators and those who have seized power in the network.
The inexperienced user can get caught on a hook of virtual methods that organize online numerous pyramids, lotteries, fake shops and sales. The Internet gives you greater freedom to disseminate information, but not all enjoy this freedom. Among the problems of the modern Internet are violations of copyright and distribution of pornography.