Types of Computer Viruses

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Across
  1. 4. a computer fanatic, esp one who through a personal computer breaks into the computer system of a company, government, etc.
  2. 5. a piece of data downloaded to a computer by a website, containing details of the preferences of that computer's user which identify the user when revisiting that website.
  3. 7. to copy or transfer (data or a program) into the memory of one computer system from a larger one.
  4. 8. to pass or cause to go from one place or person to another; transfer.
  5. 10. to defend from trouble, harm, attack, etc.
  6. 12. to make or be a copy of; reproduce.
  7. 13. the physical equipment used in a computer system, such as the central processing unit, peripheral devices, and memory
  8. 15. motivated by wrongful, vicious, or mischievous purposes.
  9. 16. a piece of software designed to prevent viruses entering a computer system or network.
  10. 20. the programs that can be used with a particular computer system
  11. 22. a system of interconnected computer systems, terminals, and other equipment allowing information to be exchanged.
Down
  1. 1. a series of observations, measurements, or facts; information.
  2. 2. the protection of data to ensure that only authorized personnel have access to computer files.
  3. 3. a sequence of coded instructions fed into a computer, enabling it to perform specified logical and arithmetical operations on data.
  4. 6. a device, usually electronic, that processes data according to a set of instructions.
  5. 9. a computer program that reduces screen damage resulting from an unchanging display when a computer is switched on but not in use by blanking the screen or generating moving patterns, etc.
  6. 11. a declaration of the intention to inflict harm, pain, or misery.
  7. 14. documents or information about a specific subject, person, etc.
  8. 17. the single worldwide computer network that interconnects other computer networks, on which end-user services, such as World Wide Web sites or data archives, are located, enabling data and other information to be exchanged
  9. 18. to affect with a computer virus.
  10. 19. a group or combination of interrelated, interdependent, or interacting elements forming a collective entity; a methodical or coordinated assemblage of parts, facts, concepts, etc.
  11. 21. the act of approaching or entering.