To prevent users from copying data to removable media, what should you do?

Applying a group policy is an effective way to prevent users from copying data to removable media. Group policies allow administrators to manage and enforce security settings across multiple computers in a network. By configuring a specific group policy, administrators can restrict the use of removable storage devices, such as USB drives, effectively preventing unauthorized data transfers. This approach ensures that all users and devices are subject to the same controls, providing a consistent level of security.

Locking computer cases, while it might protect the hardware itself, does not address data transfer issues related to removable media. Disabling copy and paste would not prevent all methods of data transfer to removable media, as users could still utilize alternative methods to move data. Storing media in a locked room, although it keeps physical media secure, does not address the broader issue of data copying across the entire organization. Therefore, applying a group policy is the most comprehensive and effective solution for controlling data transfers to removable media.