The Computer Fraud and Abuse Act makes it a federal crime to cause damage to a $$protected computer.$$ Which of the following is not a protected computer as defined under paragraph $1030($a$)(5)$ of the Computer Fraud and Abuse Act?

Question $18$ options:

A computer used in$,$ or affecting, interstate or foreign commerce or communications.

A computer used exclusively for or by a bank or other financial institution.

A computer used exclusively for or by the United States Government

A computer system specifically intended to be used exclusively for penetration testing training$/$practice$.$