Key takeaway
School security combines clear responsibilities, an understanding of data flows, analysis of suspicious software and ongoing monitoring. Plan the five areas as connected work: incident response, data mapping, isolation, EDR and monitoring. The aim is to protect sensitive information and keep teaching and everyday operations running.
Start with the school’s practical risks
A school network connects teaching, staff devices and student information. Its protection plan needs to address both data privacy and the ability to keep everyday services running. Assess the risks introduced by devices and external services connected to that environment.
Teaching and everyday services
A systems outage can interrupt access to lesson materials, remote classes and even cafeteria services. Account for these dependencies in the response plan.
Personal information
Identify where information about students, teachers and others connected with the school is stored. Access to sensitive information and its sharing need explicit restrictions.
Devices and external services
Laptops used away from school may return to the network without needed updates. Review external services used by staff and suppliers’ access to school data as well.
Define who does what during an incident
Record the responsible people, their roles and their main actions before an attack occurs. The plan should cover the initial response as well as the work needed after the incident.
Assess the situation
Examine the initial signs, determine the attack’s impact and establish whether it is still in progress. Use that information to decide the next response actions.
Contain the incident
Limit further harm and investigate the incident’s root cause. Addressing the visible symptoms alone leaves the underlying problem unresolved.
Remove malware and remediate vulnerabilities
Remove the malware and remediate the vulnerabilities found across the network. Base this work on what the investigation reveals about the cause.
Review the response
After the incident is resolved, review the processes, technologies and tools used. Identify changes that can reduce the risk of a repeat incident.
Map where data is stored and how it moves
A data-flow map shows how information moves between users, devices, systems and external services. Involve the departments that use the data alongside the IT team.
Where information originates and stays
Record how data is collected or created and where it is stored. This inventory provides a basis for planning the protection of sensitive information.
Who uses the information and why
Identify the users, their working needs and the sensitivity of the data. Relate access permissions and sharing restrictions to those needs.
Where information travels
Show transfers between internal systems and external services. Include suppliers and partners that can access school information.
Analyze suspicious software in an isolated environment
Running a suspicious executable directly on a working system can cause harm before a check is complete. An isolated environment lets analysts observe installation and execution, including what the program does to system files and settings.
The purpose is to assess the program’s behavior. Treat an unknown file cautiously until its trustworthiness has been assessed. Isolation, analysis and evaluation of the result work together.
Investigate endpoint activity with EDR
Endpoint detection and response (EDR) helps establish how an attack began, which devices it reached and what information was affected. Ongoing visibility gives the IT team evidence to reconstruct events and choose response actions.
Not every incident starts with malware. Someone misusing access can employ a legitimate application to reach another system and steal data. Investigate activity on the device: a familiar application can also be used maliciously.
Detection results need assessment: false positives and missed threats are possible. Combine detection with isolation and investigation.
Make monitoring an ongoing responsibility
Logs of internal and external network traffic help reveal unusual user behavior and suspicious activity. Track device health, updates and vulnerabilities as well: a one-time check cannot show later changes.
Monitoring needs follow-through. Assign responsibility for prioritizing and fixing weaknesses and investigating signs of an incident. If the school’s IT team lacks capacity for ongoing monitoring, define which tasks a managed detection and response (MDR) service would handle and how it would work with the school team.