Cyber Security for Primary Schools: The Biggest Risks to Watch in 2026

Jul 13, 2026 12:53:07 PM

Primary schools rely on technology every day. From registration systems and parent communication platforms to Microsoft 365, safeguarding records, finance systems, laptops, tablets and cloud storage, school IT is now central to how a school operates.

That makes cyber security for primary schools more important than ever. The Department for Education’s cyber security standard says schools and colleges should be working towards meeting cyber security expectations by 2030, including annual cyber risk assessments, termly reviews, cyber awareness, secure user accounts, backups, software updates and incident reporting.

This does not mean every primary school needs enterprise-grade security tools or a large internal IT team. But it does mean schools need sensible, consistent controls that protect pupil data, staff accounts, devices and everyday systems.

In the 2025/2026 Cyber Security Breaches Survey, 49% of UK primary schools said they had identified a cyber breach or attack in the previous 12 months. The same report found that incidents were more common in secondary schools, further education and higher education, but primary schools were still experiencing cyber risk at a significant level.

For school leaders, business managers and IT leads, the question is not simply “could this happen to us?” It is “what are our most likely risks, and what practical steps can we take to reduce them?”

1. Phishing and email compromise

Phishing remains one of the most common routes into an organisation. For schools, this might look like a fake invoice, a message pretending to be from a senior leader, a malicious attachment, or a login page designed to steal a staff member’s Microsoft 365 password.

The risk is not just technical. A compromised email account can be used to access files, impersonate staff, contact parents, redirect payments or spread further malicious emails inside the school community.

Primary schools should focus on the basics first:

make sure multi-factor authentication is enabled for staff accounts
protect admin accounts especially carefully
train staff to recognise suspicious emails
encourage staff to report concerns quickly
review mailbox forwarding rules
use SPF, DKIM and DMARC to reduce email spoofing risks

NCSC guidance for schools includes practical resources for school staff, senior leaders and IT teams, and highlights the importance of improving cyber resilience across the education sector.

2. Weak Microsoft 365 security settings

Many schools use Microsoft 365, but not all Microsoft 365 environments are configured securely. Over time, settings can become messy. Users are added, permissions change, old accounts remain active, shared mailboxes are created, Teams and SharePoint sites grow, and nobody is quite sure who has access to what.

Common Microsoft 365 risks for primary schools include:

staff accounts without multi-factor authentication
old accounts that have not been disabled
too many users with admin rights
weak password and sign-in policies
unmanaged sharing links in OneDrive or SharePoint
poor visibility of suspicious sign-ins
lack of backup or retention planning

A Microsoft 365 review does not need to be complicated. A good review should check identity security, admin roles, sharing settings, email protection, Teams and SharePoint structure, device access and audit visibility.

The Department for Education’s cyber security standard specifically includes controlling and securing user accounts and access privileges, as well as licensing digital technology and keeping it up to date.

3. Pupil data and safeguarding information

Primary schools hold sensitive personal information about pupils, families and staff. This can include contact details, medical information, attendance records, safeguarding notes, SEND information, assessment data and financial records.

If this information is exposed, lost or accessed by the wrong person, the impact can be serious. The DfE warns that cyber incidents can lead to safeguarding issues, data breaches, disruption, financial loss and reputational damage.

Good school data protection is not only about policies. It is also about practical controls:

who can access sensitive files?
are safeguarding records stored securely?
are shared drives and SharePoint libraries permissioned properly?
are leavers removed quickly?
are third-party platforms reviewed?
are staff using approved systems rather than personal email or consumer file-sharing tools?

The DfE’s data protection guidance reminds schools that when sharing children’s data with third parties, schools should consider the risks and use secure methods, particularly where information is being shared for safeguarding or other sensitive purposes.

4. Unmanaged devices and outdated software

Schools often have a mixed estate of devices: staff laptops, classroom PCs, tablets, shared devices, office machines and sometimes older equipment that is still in use because budgets are tight.

That creates several risks:

devices missing security updates
unsupported operating systems
weak local admin controls
inconsistent antivirus or endpoint protection
staff accessing school data from unmanaged personal devices
lost or stolen devices without encryption

The DfE cyber security standard includes securing digital technology and data with anti-malware and a firewall, as well as keeping licensed digital technology up to date.

For primary schools, the goal should be visibility and consistency. You should know what devices exist, who uses them, whether they are protected, and whether they are still receiving updates.

5. Ransomware and disruption

Ransomware is often discussed in relation to large organisations, but schools are also vulnerable. A ransomware incident can lock files, disrupt lessons, affect communications, prevent access to registers or systems, and create a serious operational issue.

The DfE warns that cyber incidents can cause significant and lasting disruption, including the risk of repeated incidents and even school or college closure.

The best protection against ransomware is layered:

secure user accounts
patch devices and software
restrict admin rights
filter malicious websites and emails
keep offline or protected backups
test recovery processes
train staff to report suspicious activity early

Backups are especially important. A backup plan is only useful if it is tested and if the school knows how quickly key systems can be restored. The DfE cyber security standards include developing and implementing a data backup plan and reviewing it every year.

6. Third-party systems and suppliers

Most primary schools rely on external systems for finance, safeguarding, MIS, communication, catering, payments, learning platforms and IT support. These systems are essential, but they also increase the number of places where school data may be stored or accessed.

Schools should have a clear view of:

which suppliers process school data
what data each supplier can access
whether accounts are reviewed regularly
whether integrations are still needed
how supplier access is removed when no longer required
what happens if a supplier has a cyber incident

The NCSC includes supply chain security among its useful resources for schools and encourages organisations to establish effective control and oversight of suppliers.

7. Low cyber awareness among busy staff

School staff are busy. Cyber security cannot depend on every member of staff becoming a technical expert.

The aim should be simple, repeated awareness:

pause before opening unexpected attachments
check payment or bank detail changes by another method
report suspicious emails
use strong passwords and MFA
avoid storing pupil data in the wrong places
understand what to do if something goes wrong

The NCSC provides cyber security training for school staff to help improve cyber resilience, and the DfE standard includes creating and implementing a cyber awareness plan for students and staff.

A practical cyber security checklist for primary schools

If you are not sure where to start, focus on these ten areas:

Enable multi-factor authentication for staff accounts.
Review who has admin access.
Disable accounts for staff who have left.
Check Microsoft 365 sharing and permissions.
Keep devices and software up to date.
Use anti-malware and firewall protection.
Review backups and test recovery.
Train staff to recognise phishing.
Check SPF, DKIM and DMARC for your domain.
Carry out a cyber risk assessment and review it regularly.

The DfE cyber security standard expects schools and colleges to conduct a cyber risk assessment annually and review it every term.

Final thoughts

Cyber security for primary schools does not need to be overwhelming. Most schools can make meaningful improvements by focusing on account security, Microsoft 365 configuration, device management, backups, staff awareness and clear procedures.

The important thing is to move from “we think we are probably OK” to “we know what our main risks are, and we have a plan to reduce them.”

If your school is unsure where to start, 8-Bit Egg can help review your Microsoft 365 setup, email security, device management and general cyber security posture. We work with schools and small organisations to make IT safer, clearer and easier to manage, without unnecessary complexity.

Cyber Security for Primary Schools: The Biggest Risks to Watch in 2026

1. Phishing and email compromise

2. Weak Microsoft 365 security settings

3. Pupil data and safeguarding information

4. Unmanaged devices and outdated software

5. Ransomware and disruption

6. Third-party systems and suppliers

7. Low cyber awareness among busy staff

A practical cyber security checklist for primary schools

Final thoughts

Further reading

DfE Cyber Security Hub

Gov.uk

Gov.uk - PDF form

ICO

Other sources

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