If a list of blocked websites is implemented, the list is updated on a daily basis to ensure that it remains effective.
Topic
Blocking access to specific websites
Applicable to
Non Classified, Official, Protected, Secret, Top Secret
History
Priority
recommended
Mar 2022
Removed
The recommendation to implement a list of blocked websites only if a list of allowed websites wasn’t implemented was merged into recommendations to block dynamic domain names and domain names that can be registered anonymously for free, thereby reflecting that even if a list of approved website categories is implemented that tailored blocking of specific known malicious domain names can still be beneficial.
2015
Agencies blacklisting websites should update the blacklist on a daily basis to ensure that itremains effective.
2010
It is recommended agencies blacklisting websites update the blacklist on a frequent basis to ensure that itremains effective.