Block Screen Capture

BlockScreenCapture is a sandbox setting in Sandboxie Ini available since v1.13.6 / 5.68.6. If enabled, it will prevent sandboxed processes from accessing the images of the window outside the sandbox. For example:

   .
   .
   .
   [DefaultBox]
   BlockScreenCapture=y

A setting similar to BlockScreenCapture is CoverBoxedWindows.

Related Sandboxie Plus setting: Sandbox Options > General Options > Restrictions > Prevent sandboxed processes from capturing window images