DLP rules can indeed scan attachment content. However, Attachment Content rules work differently depending on your Virtru product. This guide outlines how Attachment Content rules work in different situations. 

This guide only illustrates where attachment content rules work and what types of attachments are scanned. To learn how to create and apply attachment content rules, among other types of email (DLP) rules, see Creating Custom DLP Rules

Using Virtru With the Chrome Extension

For emails created using a Virtru browser extension in Chrome for Gmail, this rule will only be applied to the following file types:

• Searchable PDFs.
• Text file types including .txt, .html, .csv, and other text based formats

Other file types and images will not be scanned by this rule when using a Chrome plugin.

Using Virtru for Outlook Desktop Version (Only)

For emails created using the Virtru for Outlook add-in, this rule will be applied to wide range of text and proprietary file formats including:

• Microsoft Office, Open Office and Hancom Office and iWork files
• Searchable PDFs
• Compressed files including Tar, Rar and Zip files
• Adobe Framemaker and Photoshop files with searchable text
• Text files, including .txt, .html, .csv

Using Virtru for O365 

For emails created using the Virtru for Outlook365 add-in, this rule will only be applied to the following file types:

• Searchable PDFs.
• Text file types including .txt, .html, .csv, and other text based formats

Other file types and images will not be scanned by this rule when using the add-in.

Using the Virtru Gateway Product

The Virtru Gateway product also enables this rule to include a larger range of file types including Microsoft Office file formats. Virtru Gateway provides the greatest protection.

For emails passing through your server, this rule will be applied to many text and proprietary file formats including:

• Microsoft Office, Open Office and Hancom Office and iWork files
• Searchable PDFs
• Compressed files including Tar, Rar and Zip files
• Adobe Framemaker and Photoshop files with searchable text
• Text files, including .txt, .html, .csv

Using Virtru Secure Share

For content shared via Virtru Secure Share (non-integration versions), this rule will only be applied to the following file types:

• Searchable PDFs.
• Text file types including .txt, .html, .csv, and other text based formats

Other file types and images will not be scanned by this rule when using Virtru Secure Share.

Additional Resources:

• Managing DLP rules in the Virtru Control Center
• Creating Custom DLP Rules