Wired describes the recent Canvas breach as an unusually disruptive ransomware-style extortion incident because one attack on Instructure's learning platform temporarily paralyzed thousands of schools during finals and end-of-year assignments. The hackers using the "ShinyHunters" name claim more than 8,800 schools were affected, while Instructure says exposed data included names, email addresses, student ID numbers, and platform messages. From the report: Higher education has long been a target of ransomware gangs and data extortion attacks. But never before, perhaps, has a cyberattack against a single software platform so thoroughly disrupted the daily operations of thousands of schools across the United States.…