What mechanism should be implemented to prevent printing documents from a corporate file share?

Implementing digital rights management (DRM) is an effective mechanism for preventing the printing of documents from a corporate file share. DRM involves applying a set of access control technologies that restrict the ways users can interact with digital content. By using DRM, organizations can define specific permissions regarding how documents are handled, including whether they can be printed, copied, or shared.

In the context of sensitive or proprietary information, DRM allows the organization to enforce policies that limit users' capabilities to print documents, thereby protecting data from unauthorized distribution or leakage. This is particularly crucial in preventing potential data breaches or compliance violations, as it ensures that sensitive information remains within secure environments and is not exposed through paper prints.

Using virtual desktop infrastructure (VDI) may provide secure access to corporate resources, but it does not inherently control printing capabilities. Similarly, remote desktop protocol (RDP) can facilitate access to corporate systems remotely but also does not restrict printing. Watermarking could deter unauthorized use by identifying document ownership or adding information about the document's source, but it does not prevent printing itself. Thus, among the options available, DRM stands out as the most effective method to fulfill the requirement of preventing document printing from a corporate file share.