Cyber Security Checklists for Businesses
Use AceGuard’s practical cyber security checklists to review your business security, identify gaps and take clear steps to reduce cyber risk.
These checklists cover Microsoft 365 security, MFA, Cyber Essentials, phishing prevention, Identity & Access Management, vulnerability assessments and cyber security audits.
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Business Cyber Security Checklist
- Enable Multi-Factor Authentication for all users.
- Review Microsoft 365 administrator accounts.
- Remove inactive user accounts.
- Check SharePoint and OneDrive sharing permissions.
- Implement Conditional Access where appropriate.
- Use strong password and account protection policies.
- Review email security settings including SPF, DKIM and DMARC.
- Keep devices, software and operating systems updated.
- Ensure backups are secure and regularly tested.
- Train staff to recognise phishing and social engineering attacks.
Popular Cyber Security Checklists
Microsoft 365 Security Checklist
Review MFA, Entra ID, Conditional Access, SharePoint, Teams, OneDrive and administrator access.
View Guide →Cyber Essentials Checklist
Check readiness across firewalls, secure configuration, access control, malware protection and security updates.
View Guide →MFA Checklist
Ensure Multi-Factor Authentication is enabled, enforced and protecting all high-risk accounts.
View Guide →IAM Checklist
Review identity security, user permissions, privileged accounts, SSO and access governance.
View Guide →Phishing Prevention Checklist
Reduce email compromise, malicious links, fake login pages and payment fraud risks.
View Guide →Cyber Security Audit Checklist
Prepare for a structured review of systems, users, policies, controls and business risks.
View Guide →Microsoft 365 Security Checklist
- Confirm MFA is enabled for all users.
- Protect Global Administrator accounts.
- Review Conditional Access policies.
- Block legacy authentication.
- Review external sharing in SharePoint and OneDrive.
- Review Teams guest access settings.
- Check mailbox forwarding rules.
- Enable audit logging and security alerts.
- Review inactive accounts and unused licences.
- Review privileged roles in Microsoft Entra ID.
Cyber Essentials Readiness Checklist
- Use supported operating systems and software.
- Apply security updates within required timescales.
- Use firewalls to protect devices and networks.
- Remove default passwords and insecure configurations.
- Restrict user permissions to business need.
- Enable malware protection.
- Use MFA for cloud services.
- Document key security controls.
- Review remote working arrangements.
- Prepare evidence before certification submission.
Related Cyber Security Guides
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Checklists are a useful starting point, but a professional review can identify risks that are easy to miss internally.
AceGuard helps businesses strengthen Microsoft 365 security, prepare for Cyber Essentials and reduce cyber risk.
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