Two computers with a cable

Users questions: They buy a computer, two prepared to use a network cable. So that if a computer in a Trojan will use the same cable as to affect the safety of another computer. In the absence of the horse landing on a computer account will be stolen from you?
Experts answer: will use the same cable as affected by the security on another computer Depends on the type of horse; in the absence of the horse landing on the computer account is not stolen.
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