← ISO 27001 Annex A in plain English

A.5.13 A.5

Organizational / A.5.13

Labelling information so its classification is visible

Think of it likeWriting PRIVATE on the folder, so nobody has to open it to find out.

In plain English

The family marks information clearly enough that anyone handling it can tell how careful to be without having to read it first.

Related CSF and CIS controls (unofficial mapping)