Canvas attack aftermath: What risks come next?

A cybersecurity professional recounts the April 2026 Canvas breach attributed to the ShinyHunters/GOLD CRYSTAL group, reporting 3.65 TB of exfiltrated data impacting thousands of educational organizations; while the vendor claims data deletion, the author warns of persistent downstream risks—phishing, voice phishing (vishing), impersonation, and credential-harvesting campaigns—and advises schools, parents, and students to strengthen authentication, review helpdesk workflows, increase awareness, monitor identity activity, and communicate proactively.