TL;DR ShinyHunters breached Instructure’s Canvas learning management system, claiming 3.65 terabytes of data from 275 million users across 9,000 institutions worldwide, including private messages between students and teachers. Forty-four Dutch universities and schools are confirmed affected, and the breach, the second at Instructure in eight months, exposes the structural risk of vendor concentration in education technology. The largest education data breach in history was not an attack on a school. It was an attack on a vendor. On 30 April, hackers exploited a vulnerability in the systems of Instructure, the company that makes Canvas, the learning management system used by 41 per cent of higher education institutions across North America.…