Name a method for securing confidential documents in physical spaces.

Using lockable file cabinets is a highly effective method for securing confidential documents in physical spaces because it provides a tangible, physical barrier against unauthorized access. These cabinets can be locked, and only designated personnel should have the keys or access codes. This control helps ensure that sensitive information is not easily accessible to anyone who does not have the proper clearance, thereby reducing the risk of data breaches or leaks.

On the other hand, burning documents after use can be effective but is not practical for all situations, especially when information needs to be preserved for record-keeping. Leaving documents out in the open poses a significant security risk since it allows anyone in the vicinity to view or take the documents, and sharing sensitive information via email can introduce digital vulnerabilities, such as unauthorized access or interception. Therefore, lockable file cabinets present a balanced and reliable approach to safeguarding physical documents.