Cyber Essentials v3.3

Cyber Essentials: Requirements for IT Infrastructure

Cyber Essentials v3.3 is a UK government-backed cybersecurity scheme defining baseline security measures for businesses. The update, effective from 26th April 2026, refines requirements to close ambiguities and enforce stricter compliance on cloud services, MFA, and endpoint protection.

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Overview

Cyber Essentials v3.3 is an updated version of the UK government-backed scheme aimed at improving organizational cybersecurity practices. It retains its five core controls—firewalls, secure configuration, patch management, user access control, and malware protection—while introducing significant refinements. From April 2026, the scheme mandates stricter scoping for cloud services, expanded MFA deployment, and precise documentation of firewall rules. The 14-day patching rule applies to not only software fixes but also configuration changes, strengthening vulnerability management. Organizations are encouraged to proactively prepare to meet these standards by updating their IT scope, enforcing security measures on all devices, and documenting all changes clearly. Cyber Essentials certification demonstrates compliance with recognized security standards and is often deemed critical for public sector contracts.

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