Cyber Security Checklist for Businesses
Most cyber attacks exploit simple weaknesses that could have been prevented. Use this practical cyber security checklist to assess your organisation’s security posture and identify areas for improvement.
If you answer “No” to any of the items below, your organisation may be exposed to unnecessary cyber risk.
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Essential Cyber Security Checklist
- Multi-Factor Authentication enabled for all users.
- Strong password policy implemented.
- Administrator accounts restricted and reviewed.
- Microsoft 365 security reviewed within the last 12 months.
- Operating systems fully patched and updated.
- Endpoint protection installed on all devices.
- Firewall protection enabled and reviewed.
- Remote access secured.
- User accounts reviewed regularly.
- Former employee accounts removed immediately.
- Email authentication configured (SPF, DKIM and DMARC).
- Backups tested regularly.
- Business-critical data encrypted where appropriate.
- Cyber incident response plan documented.
- Staff aware of phishing risks.
Microsoft 365 Security Checklist
- MFA enabled for every account.
- Conditional Access policies configured.
- Legacy authentication disabled.
- Guest user access reviewed.
- Shared mailboxes secured.
- Administrative privileges restricted.
- Mail forwarding rules reviewed.
- Audit logging enabled.
- Suspicious sign-in activity monitored.
- Security defaults reviewed.
Cyber Essentials Checklist
- Firewalls configured correctly.
- Secure configuration applied to devices.
- User access controls implemented.
- Malware protection deployed.
- Security updates applied promptly.
Quick Security Score
Count how many statements you answered “Yes” to:
| Score | Assessment |
|---|---|
| 0 – 10 | High Risk |
| 11 – 20 | Moderate Risk |
| 21 – 30 | Good Security Foundation |
| 31+ | Strong Security Posture |
What Happens If You Fail the Checklist?
Most successful cyber attacks exploit missing MFA, weak passwords, poor access controls, phishing vulnerabilities or unpatched systems. If your organisation has identified weaknesses, addressing them now is significantly less costly than recovering from a cyber incident.
Need Help Improving Your Security?
AceGuard helps businesses strengthen cyber security through audits, Microsoft 365 reviews, Cyber Essentials support, vulnerability assessments and managed cyber security services.
Book a free consultation and receive practical recommendations tailored to your organisation.
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