•As productivity
applications, they must be well integrated in the work environment (green)
•Threats—A tunnel from the bad guys
–Executable
attachments
–Exploits of
complicated data formats
•Choices
–Run two copies, one in Green and one in Red
–Run in Green
and mitigate threats
•Green
platform does not execute arbitrary programs
•Green apps are conservative in the file formats they accept
–Route
messages to appropriate machine