A major educational data breach tied to Instructure’s Canvas learning management system triggered urgent response guidance for colleges and universities. The article describes the May incident as the largest education-sector breach on record, impacting an estimated 275 million students, teachers, and staff across roughly 9,000 institutions. University of Wisconsin–Madison issued real-time alerts instructing faculty and students not to proceed with Canvas prompts such as clicking links, logging in, resetting passwords, or completing tasks when prompted. The breach reinforces how LMS vendor risk can become institutional risk, particularly when authentication and account-access workflows are compromised. For higher education leaders, the immediate issue is credential and session safety; the longer-term issue is vendor governance, incident response planning, and continuity safeguards for critical instruction and student services.