G-Cloud 15 Cyber Essentials Readiness Checklist for Suppliers

1. Scope decisions

• Whole organisation vs delivery unit – most G-Cloud 15 suppliers certify the whole organisation to avoid scope disputes.
• Cloud services in scope: Microsoft 365, Google Workspace, AWS/Azure/GCP tenants used to deliver the service.
• BYOD policy documented – see BYOD rules.
• Subcontractor scope confirmed – each in-scope supplier holds their own certificate.

2. User access control

• MFA enforced on every cloud user account, not just admins (Danzell 2026 tightening).
• Admin accounts separated from day-to-day accounts.
• Documented leaver process with evidence for the last three leavers.
• Password policy meets 8+ characters with either MFA or 12-character alternative.

3. Secure configuration

• Default passwords changed on all devices and network kit.
• Unused services and accounts disabled.
• Auto-lock enabled on all devices.

4. Malware protection

• Anti-malware deployed on every in-scope device (Microsoft Defender is fine when configured).
• Signature update schedule evidenced.
• Mobile devices covered via MDM or app-store restriction.

5. Security update management

• Documented 14-day patch policy for high/critical vulnerabilities.
• Patch status report from Intune, RMM or equivalent.
• No unsupported operating systems in scope – check every server and end-user device.

6. Firewalls and routers

• Boundary firewall configured and admin password changed.
• Host-based firewall enabled on every device.
• Inbound services list documented with business justification.

7. Evidence pack for the submission

• Asset list (laptops, phones, servers, cloud tenants).
• MFA enforcement screenshots.
• Patch status export.
• Admin account list with justification.
• Anti-malware deployment evidence.

8. G-Cloud 15 specific items

• Certificate must be valid at contract award – plan renewal date around your bid window.
• Save the PDF certificate and IASME registry link for the GCA supplier declaration.
• If bidding on higher-impact lots, check whether CE Plus is called out.

Fully prepared but running out of time? Our 24-hour fast-track is designed for this. The evergreen supplier page is at Cyber Essentials for G-Cloud suppliers; the framework-specific hub is G-Cloud 15 Cyber Essentials.