Topic

Email content filtering

Applicable to

all

History

Priority

must

Dec 2022

Email content filtering is implemented to filter potentially harmful content in email bodies and attachments.

Language from an existing control relating to content filtering was amended to ensure that controls for email content filtering and web content filtering are aligned.

Mar 2022

Email content filtering is implemented for email bodies and attachments.

Miscellaneous changes were made to rationale and recommendations throughout the publication to clarify content without changing intent. This included a review from the Guidelines for System Hardening chapter through to the Guidelines for Data Transfers chapter.

Mar 2019

Email content filtering controls are implemented for email bodies and attachments.

Security control 1234 was modified to include content filtering for email body contents. Security control 1057 was merged into security control 1234.

Feb 2019

Content filtering controls are implemented for email attachments.

2015

Agencies must implement applicable content filtering controls on email attachments, asrecommended in the Data Transfers and Content Filtering chapter of this manual.