Internal. This category of information can be freely provided to any persons employed by the organization. Ordinarily, unauthorized disclosure of Internal information is not expected to cause serious harm to the company, its shareholders, its business partners, its customers, or its employees. However, persons adept in social engineering skills can use this information to masquerade as an authorized employee, contractor, or vendor to deceive unsuspecting personnel into providing more sensitive information that would result in unauthorized access to corporate computer systems.