Instructure Confirms Canvas Security Breach, Impacting Educational Institutions
Instructure, the developer of the Canvas learning management system, has confirmed a security breach that allowed hackers to exploit vulnerabilities and deface login portals. The breach involved cross-site scripting (XSS) vulnerabilities, enabling attackers to gain authenticated admin sessions. This incident followed an initial breach where hackers stole over 3.6 terabytes of data. The attackers, identified as ShinyHunters, used the same vulnerability to pressure Instructure into paying a ransom by defacing portals with extortion messages. The breach affected the Free-for-Teacher environment, a limited version of Canvas used by individual educators. Instructure has since taken steps to revoke unauthorized access, engage forensic experts, and apply additional safeguards.