The displaying of confidential data in documents brings about the following issues:
1. Access Protection - The documents should be protected so that only the authorized user can view them and no other user can view the same documents. Example: A bank customer should be the only person allowed to view his bank statement.
2. Document Storage - The documents should not be stored in any format in any location that can be accessed by other users. Example: The document should not be stored in caches of browsers that can be later viewed by other users.