Attachment Protect - Decryption Portal - Aug 2024

Service Update

Availability	From August 12th, 2024
Product(s)	Email Security Cloud Gateway (CG), Attachment Protect
Who's affected	Attachment Protect, End Users

Overview

Mimecast is pleased to announce the release of a new feature within Email Security Cloud Gateway Attachment Protection. There is now an option to Strip and Link Encrypted Attachments in emails. This feature will allow end users to have quicker access to files if they are scanned and deemed to be safe.

What's changing

When the option to Strip and Link Encrypted Attachments is selected, a notification will appear when attempting to open the encrypted file(s), stating that an encrypted file has been removed from the message. This notification will contain a link leading to a decryption portal where a password must be entered. If the correct password is submitted, the encrypted file(s) will be analyzed and decrypted. Each attachment deemed safe will then be delivered in a single email.

Release Schedule

Date	Grid
August 7, 2024	DE, JER, ZA
August 12, 2024	AU
August 12, 2024	CA, USB
August 13, 2024	UK
August 13, 2024	US

Recommended actions

To enable the new feature, this will need to be configured in your Attachment Protection Definitions and Policies and will also require Attachment Management Definitions to be updated with the following option: Hold Encrypted Archives and Documents; check the Allow if decrypted and not malicious.

To make sure that passwords that have been generated internally are discoverable by auto-decrypt, we recommend using only alphanumeric characters "a-zA-Z0-9".

See Also...

• Attachment Protection Definitions
• Attachment Management Overview
• Configuring Attachment Management Policies