The primary basis for establishing categories within an information classification scheme should be the business impact, because it reflects the level of importance and sensitivity of the information to the organisation and its stakeholders. The business impact can be assessed by considering the potential consequences of unauthorised disclosure, modification, or loss of availability of the information. The higher the business impact, the higher the level of protection required for the information. For example, information that could cause severe damage to the organisation’s reputation, operations, or finances if compromised should be classified as Top Secret1, whereas information that is intended for public release should be classified as Public2. The information security policy should provide guidance on how to classify information based on the business impact, but it is not the primary basis for establishing categories. The information architecture and industry standards may also influence the classification scheme, but they are not as relevant as the business impact.