Security issues

Limited security precautions are provided in FATMEN. They are as follows:

1. There are no restrictions on access to catalogue information, other than those provided at the file system level. That is, any use may inspect any catalogue.
2. Directories may only be deleted if they are completely empty, i.e. contain no subdirectories and no files.
3. File entries may only be deleted by their creator. The creator is identified by the account field.
4. Protection may be established on directory trees, as explained below.

• Restricting read access to catalogue information
• Access to files catalogued in FATMEN
• Access control lists
• Account aliases
• Update control