Кандидат филологических наук, доцент Казну т. Т

Malicious program is a general term for any computer program that is designed to harm its victim(s). Malware (malicious software) is software created to damage or alter the computer data or its operations. These are the main types of malware:

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  Viruses are programs that spread by attaching themselves to executable files or documents. When the infected program is run, the virus propagates to other files or programs on the computer. Some viruses are designed to work at a particular time or on a specific date, e.g. on Friday 13th. An email virus spreads by sending a copy of itself to everyone in an email address book. The word "virus" is also used broadly to include computer viruses, worms, and Trojan Horse programs.
  
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  Worms are self-copying programs that have the capacity to move from one computer to another without human help, by exploiting security flaws in computer networks. Worms are self-contained and don't need to be attached to a document or program the way viruses do.
  

People often confuse viruses and worms. Some confusion about the distinction between a virus and a worm is caused by two distinctly different criteria:

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