ISO/IEC 27001:2022 · Technological control · New in 2022
ISO 27001 Annex A 8.23: Web filtering
Quick answer
ISO 27001 Annex A 8.23 (Web filtering) is a technological control introduced in the 2022 edition. Manage access to external websites to reduce exposure to malicious content.
What auditors look for
Auditors check that 8.23 is either justified as not applicable in your Statement of Applicability or implemented and working. Typical evidence includes:
- Web filtering configuration
- Blocked category list
- Filtering reports
How to implement 8.23 in practice
- Block known malicious and newly registered domains
- Extend filtering to remote devices
- Allow a quick exception process
- Name an owner for 8.23, decide how often it runs and file evidence each time, so the control is audit-ready all year.
Recording 8.23 in the Statement of Applicability
List 8.23 with whether it applies, the reason (usually the risks it treats or a legal or contractual requirement), its implementation status and where the evidence lives. If you exclude it, explain why none of your risks or obligations require it.