Kelvinjay/Getty Images ShinyHunters, the extortion group that infiltrated cloud-based educational tech provider Instructure, claims to have stolen data from 8,809 schools around the world. Instructure is mostly known for Canvas, its cloud-based management system used by educational institutions to host course websites and readings, grade assignments, and provide discussion boards, among other uses. The bad actors said they have stolen 280 million records from teachers, students and staff members. They have shared record counts with BleepingComputer , who said that ShinyHunters stole tens of thousands to several million pieces of data per institution. BleepingComputer didn't name the schools and institutions that were affected, but some students found out theirs were when they couldn't log into their Canvas accounts.…