Australian Information Security Manual
Guidelines for email

Australian Information Security Manual ISM-0565: Blocking emails with inappropriate markings

Email servers are configured to block, log and report emails with inappropriate protective markings.

Maintained by Gerard BlokdykVerified against the published standard Control text last updated

What else in your programme already covers this

This control maps to 3 controls across 3 other frameworks. If you already hold one of them, the evidence you collected for it is the starting point here rather than new work.

CIS Controls v8 · 1 control

  • CIS-3.13 Deploy a Data Loss Prevention Solution

ISO 27002:2022 · 1 control

  • 8.12 Data leakage prevention

New Zealand Information Security Manual (NZISM) · 1 control

  • 15.2.39.C.01 15.2.39.C.01 Block unmarked or wrongly marked email on classified systems

Every mapping shown was judged rather than inferred from wording similarity, and the ones that failed review are published too. See the coverage reports and what was rejected.

Other controls in Guidelines for email

Query this from an agent

The graph holds this control, the 3 it maps to, and the evidence behind each claim, over MCP and REST.

MCP endpointAll Australian Information Security Manual controls