Helper Security

• The helper is a native code application
• It has access to all the client resources
• It has access to all network resources that the client has access to
• Installation and setup are under client control
• Some helpers are inherently dangerous
  • Postscript is a full programming language
  • It includes file access commands
  • A Postscript viewer can access your file system
  • There is no ``safe'' subset of Postscript run by viewers
• Users can setup their own handlers