The 20-Day Sprint: How to Fast-Track Your Cyber Essentials Plus Certification

AUTHOR: 313SEC INTELLIGENCE UNIT | DATE: MAY 05, 2025

For UK businesses, Cyber Essentials Plus (CE+) is no longer just a "nice-to-have" badge. It is increasingly the gatekeeper for winning government contracts, securing supply chains, and proving to customers that their data is safe.

While the basic Cyber Essentials is a self-assessment, Cyber Essentials Plus involves a rigorous technical audit by an independent assessor. The jump in difficulty often catches businesses off guard.

Why The Rush? (The Business Case)

Beyond compliance, the controls required for CE+ prevent around 80% of common cyber threats. The certification validates five key technical controls:

• Firewalls: Securing your internet connection.
• Secure Configuration: Hardening devices against threats.
• User Access Control: Restricting access to only what is necessary.
• Malware Protection: Viruses and ransomware defense.
• Patch Management: Keeping software up to date.

The 20-Day Roadmap to Accreditation

We have broken the certification process down into four distinct "sprints."

Phase 1: Lockdown The Perimeter (Days 1–5)

Goal: Secure your network boundary (Firewalls and Wi-Fi).

• Audit your Firewall: Whether you are using a standard router or a robust WatchGuard Firebox T45, you must change default passwords immediately. Ensure the web management interface is not accessible from the open internet.
• The "Default Deny" Rule: Configure your firewall to block all inbound traffic by default. Only open ports that have a specific, documented business need.
• Segregate Wi-Fi: If you use a device like the WatchGuard AP130, create a separate VLAN for "Guest Wi-Fi". Guests must be isolated from your internal business data.
• VPN Security: If staff work remotely, ensure they connect via a VPN that requires Multi-Factor Authentication (MFA).

Phase 2: Harden Your Devices (Days 6–10)

Goal: Remove vulnerabilities from laptops, desktops, and servers.

• Kill the Bloatware: Uninstall unnecessary software. If a program isn't needed for business, it is a liability.
• Disable Auto-Run: Prevent malware from launching automatically via USB drives by disabling AutoRun/AutoPlay settings via Group Policy.
• Separate Admin Accounts: This is a common failure point. Day-to-day users must not have local administrator rights. IT staff should have two accounts: one for email/web (standard) and one for admin tasks (privileged).
• MFA Everywhere: Enable Multi-Factor Authentication on all cloud accounts (Office 365, Google Workspace) and administrative logins.

Phase 3: The Patching Sprint (Days 11–15)

Goal: Ensure all software is supported and up to date.

This is the hardest part of the audit. CE+ requires that all critical security updates are applied within 14 days of release.

• Inventory Everything: You cannot patch what you cannot see. List every OS and application.
• The "End of Life" Trap: If you are running Windows 7, Server 2008, or old versions of Java that are no longer supported, you will fail automatically. You must upgrade these systems or permanently disconnect them from the internet.
• Automate: Enable automatic updates for Windows, Browsers (Chrome/Edge), and Adobe Reader.
• Vulnerability Scan: By Day 13, run an internal vulnerability scan (using tools like Nessus or Qualys) to find what you missed.

Phase 4: Malware & Audit Prep (Days 16–20)

Goal: Final testing and documentation.

• Test Your AV: Don't just assume your Antivirus works. Download a harmless EICAR test file to ensure your endpoint protection detects and quarantines it immediately.
• Internal Pre-Audit: On Day 19, act as the auditor. Pick a random laptop and check: Is the firewall on? Is it patched? Is the user a standard user?
• Documentation: Gather your network diagrams, user lists, and patch policies into a single evidence folder.

Need Help Crossing the Finish Line?

Achieving Cyber Essentials Plus is doable internally, but it requires dedicated focus and technical tooling. If your internal IT team is stretched thin, or if the "14-day patching rule" sounds impossible to manage manually, you may need support.

313SEC specializes in guiding businesses through the Cyber Essentials Plus process. We can:

• Run the pre-audit vulnerability scans for you.
• Deploy Managed Patch Management to automate the 14-day requirement.
• Handle the technical remediation of your firewalls and endpoints.