UK Telecommunications (Security) Act 2021
Telecommunications Security Code of Practice v1.1 (July 2026): measure groups and their Tier 1 and Tier 2 dates – UK Telecommunications (Security) Act 2021

UK Telecommunications (Security) Act 2021 M23: 01 to M23.03 New v1.1 measures by December 2028: SIM provider certificate checks, automated vulnerability scanning and validated automation pipelines

What does M23 require?

Check SIM providers' certificates against the industry accreditation register and be satisfied the supporting sites and parties are trustworthy; implement automated scanning to find vulnerabilities, missing patches and configuration changes; and ensure data and software used in automation pipelines come from trusted sources, are validated and produce expected outputs. Due: Tier 1 and Tier 2 by 31 December 2028 (new in v1.1).

Maintained by Gerard BlokdykVerified against the published standard Control text last updated

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