Creating a File Attribute List

  1. Navigate to Policies > Policy Resources > DLP Data Identifiers.
  2. Click the File Attribute tab.
  3. Click Add.

    A new screen displays.

  4. Type a name for the file attribute list. The name must not exceed 100 bytes in length and cannot contain the following characters:
    • > < * ^ | & ? \ /

  5. Type a description that does not exceed 256 bytes in length.
  6. Select your preferred true file types.
  7. If a file type you want to include is not listed, select File extensions and then type the file type’s extension. A Trend Micro product checks files with the specified extension but does not check their true file types. Guidelines when specifying file extensions:
    • Each extension must start with an asterisk (*), followed by a period (.), and then the extension. The asterisk is a wildcard, which represents a file’s actual name. For example, *.pol matches 12345.pol and test.pol.

    • You can include wildcards in extensions. Use a question mark (?) to represent a single character and an asterisk (*) to represent two or more characters. See the following examples:

      - *.*m matches the following files: ABC.dem, ABC.prm, ABC.sdcm

      - *.m*r matches the following files: ABC.mgdr, ABC.mtp2r, ABC.mdmr

      - *.fm? matches the following files: ABC.fme, ABC.fml, ABC.fmp

    • Be careful when adding an asterisk at the end of an extension as this might match parts of a file name and an unrelated extension. For example: *.do* matches abc.doctor_john.jpg and abc.donor12.pdf.

    • Use semicolons (;) to separate file extensions. There is no need to add a space after a semicolon.

  8. Type the minimum and maximum file sizes in bytes. Both file sizes must be whole numbers larger than zero.
  9. Click Save.