If a list of allowed websites is not implemented, a list of allowed website categories is implemented instead.
Topic
Allowing access to specific websites
Applicable to
all
History
Priority
should
Mar 2022
Removed
The recommendation to implement a list of website categories for web content filters (ISM-1170) was merged into the recommendation to implement a list of organisation-approved domain names (ISM-0958) as an alternative approach.
2015
If agencies do not whitelist websites they should implement categories for all websites andblock prohibited categories and uncategorised sites.