ESET Ireland offers some tips on how to deal with the threat of ransomware attacks on schools. Backup is the most important thing to prepare for emergencies, including being affected by ransomware. Malware authors frequently rely on people running outdated software with known vulnerabilities. It is important to have both anti-malware software and a software firewall to help you identify threats or suspicious behaviour. If you have System Restore enabled on your Windows machine, you might be able to take your system back to a known-clean state.”]
Source: https://informationsecuritybuzz.com/articles/school-ransomware-threat-aware/