No the equipment your accessing e.g. the mail server belongs to a company that company has not given the spouse permission to access its assets. Regardless if the spouse has a username and password. The injured party in this case would be the company and they would be within their rights so seek criminal charges. The employee would also be up for displine since they allowed their username and passwords to fall into an unapproved persons hands. Since NC is a right to work state they could be discharged on the spot.