A flurry of school-related emails hits parents' inboxes most weeks — from pizza lunch flyers to school trip notifications — yet one dreaded update is becoming all too common: notice of a cyberattack. 

Students in one Ontario board returned from winter break this past Monday to classrooms with no internet and disrupted communications thanks to a cyber incident. Days later, multiple school divisions across Canada — including the country's largest — informed families about a significant data breach…