Prominent representatives of this species is considered Blaster (Lovesan) who in August 2003 spread around the world, also clogging up the network a lot of junk traffic. The worm contains insults at Bill Gates and programmed DoS-attack (DoS-attack is one of the pernicious effects of the virus. Its purpose is to that a certain amount of useless information the computer sends to one or more computers on the network. With a large number of requests, victim computer simply can no longer operate in a network normal) to the server upgrade of Windows. Classic computer viruses Unlike worms, viruses do not use network services to penetrate other computers. A copy of the virus gets on remote computers only if an infected object, for whatever does not depend on the functional reasons, the virus is activated on another computer.
Macro virus macro virus – a type of computer virus designed to macro language, built-in application software packages such as Microsoft Office. For their reproduction, such viruses use a macro-language capabilities and with their help are transferred from one infected file to others. Most of these viruses written for MS Word. Keylogger and other malicious programs. This category includes: Tools to automate the creation of viruses, worms and Trojans (designers); software libraries developed for creation of malicious software; hacking tools hide the code of infected files from the antivirus scan (File Encryption); bad jokes" that make it difficult to work with a computer; the program, inform the user deliberately false information about his actions in the system; Other programs, one way or another intentionally cause direct or indirect damage to this or remote computers.