Password-protected File Types

Always handle suspicious files with caution. Trend Micro recommends adding such files to a password-protected archive file or password-protecting document files from being opened before transporting the files across the network. Deep Discovery Email Inspector can also heuristically discover passwords in email messages to extract files.

Deep Discovery Email Inspector uses user-specified passwords to extract files or open password-protected documents. For better performance, list commonly used passwords first.

For information on the password-protected file types Deep Discovery Email Inspector supports, see Password-protected File Types.

Note:
  • File passwords are stored as unencrypted text.

  • After you register Deep Discovery Email Inspector to Deep Discovery Director, you can only export file passwords on the File Passwords screen. Deep Discovery Email Inspector automatically synchronizes file password settings from Deep Discovery Director and overwrites existing file password settings that you have configured.

The following table describes the tasks that you can perform on the File Passwords screen.

Table 1.

Task

Description

Configure analysis timeout

Type the number of minutes in the Analysis timeout field to quarantine a message when Deep Discovery Email Inspector is unable to open and analysis a password-protected file in the message within the specified time.

Add a password

Click Add Password to add a password to the list.

For more information, see Adding File Passwords.

Import passwords

Click Import Passwords to import passwords from a selected file.

For more information, see Importing File Passwords.

Export all passwords

Click Export Passwords to export all file passwords and save the file on your computer.

Password-protected File Types

Deep Discovery Email Inspector supports the following password-protected archive file types:

  • 7z

  • arj

  • rar

  • zip

Deep Discovery Email Inspector supports the following password-protected document file types:

  • doc

  • docx

  • pdf

  • ppt

  • pptx

  • xls

  • xlsx

Adding File Passwords

A maximum of 100 passwords is allowed.

  1. Go to Administration > Scanning / Analysis > Other Settings > File Passwords.
  2. Click Add Password.
  3. Type a password with only ASCII characters.
    Note:

    Passwords are case-sensitive and must not contain spaces.

  4. Optional: Click Add Password and type another password.
  5. Optional: Drag and drop the password to move it up or down the list.
  6. Optional: Delete a password by clicking the x icon beside the corresponding text box.
  7. Click Save.

Importing File Passwords

You can add up to 100 passwords in Deep Discovery Email Inspector.

  1. Go to Administration > Scanning / Analysis > Other Settings > File Passwords.

    The File Passwords screen appears.

  2. Click Import Passwords.

    The Import Passwords window appears.

  3. Browse and select the file to import.
    Note:

    Click Download sample file to view a sample of a properly formatted file.

    Deep Discovery Email Inspector checks the entries in the selected file to identify any invalid or duplicate passwords.

  4. Click Import.