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The exploitation of the Canvas Data 2 Beta environment by the threat actor ShinyHunters marks a critical shift in SaaS-focused attacks. By leveraging over-privileged administrative service accounts and exploiting the gap between production and beta security controls, attackers bypassed traditional perimeter defenses. This breach resulted in the mass exfiltration of student and faculty PII, creating systemic risks through session token hijacking and the emergence of a secondary dark web market for educational data. The incident highlights a fundamental failure in least-privilege enforcement within non-production environments, facilitating long-term persistence and significant regulatory exposure under FERPA and GDPR.