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
all
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.