Number system

12345678910
Across
  1. 6. It is a program that hides in a computer and allows someone to take full control of the computer
  2. 7. This source of virus is download from internet
  3. 8. It is a virus that secretly collects information about the user
  4. 9. The number system has base 2
  5. 10. The virus is spread by the files attached to e-mail messages
Down
  1. 1. The number system has base 16
  2. 2. The number system has base 10
  3. 3. It is the place where friday, the 13th virus was invented
  4. 4. The number system has base 8
  5. 5. In this number system, there are only a few symbols called digits