The Channel Every Perimeter Tool Misses
Every DLP control that blocks uploads and USB transfers still leaves one channel wide open: a smartphone aimed at the monitor.
Every DLP control that blocks uploads, emails, or USB transfers still leaves one channel wide open: a smartphone aimed at the monitor. A contractor opens a confidential pricing sheet, snaps it, and walks out. No file was transferred. No policy fired. The data is gone anyway.
On-screen watermarks address this gap by making the screen itself carry identifying information. When watermarking is active, the security team's chosen text — which can include the employee's username, the date, or any custom string — floats visibly over the working area of designated applications. A photograph of that screen is a photograph of the watermark. The leaker is named in the evidence they create.
Because the watermark is configurable down to its transparency, font, angle, and the exact applications or web addresses where it appears, security teams can deploy it selectively: high-risk users, sensitive document viewers, finance or HR portals — without cluttering the screens of every employee across the organization.