This incident is a case study in implicit trust extended to a SaaS vendor. Zero Trust architecture would have contained the blast radius. These are the controls that matter most — do the reactive ones now, then plan for the preventative ones.
| Control | Reactive — Do Now | Preventative — Do Next | Framework Ref |
|---|---|---|---|
| Credentials | Rotate all Canvas API keys and OAuth tokens. Invalidate active sessions. | Replace static API keys with short-lived, scoped credentials — issued per session, expired automatically. | NIST SP 800-207 §3.3 · CISA ZTMM Identity |
| Identity / MFA | Enforce MFA for all Canvas admin and teacher accounts through your IdP (Azure AD, Okta, Google Workspace). | Move toward phishing-resistant MFA (FIDO2/passkeys) for admin accounts. Eliminate password-only access. | CIS Controls v8 #6 · CISA ZTMM Identity |
| SaaS Trust | Audit every system integrated with Canvas — what data can it read or write? Remove anything no longer needed. | Deploy a CASB or API gateway to inspect Canvas traffic. Monitor bulk data queries and anomalous access patterns. | NIST SP 800-207 Tenet 2 · CISA ZTMM Apps & Workloads |
| Data Scope | Review what sensitive data (counseling notes, financial aid, health records) is currently stored in Canvas. | Classify data before it enters Canvas. Move sensitive PII to systems with tighter access controls — don't sync everything into your LMS. | CISA ZTMM Data Pillar · CIS Controls v8 #3 |
| Visibility | Enable Canvas API audit logs. Export logs from April 30 forward for forensic review. | Treat Canvas API logs like network logs. Set thresholds for unusual access spikes, unexpected geolocations, and bulk record queries. | NIST SP 800-207 Tenet 7 · CISA ZTMM Visibility |
| Timeframe | Priority Actions |
|---|---|
| Days 1–7 | Rotate credentials · Enforce MFA on admin accounts · Audit Canvas integrations · Export audit logs |
| Days 8–30 | Classify data in Canvas · Remove unnecessary data · Review SIS ↔ Canvas sync scope · Set up API monitoring |
| Days 31–90 | Migrate from static API keys to short-lived credentials · Deploy CASB or API gateway for SaaS visibility · Conduct a ZT Maturity Assessment |
The complete OZTP advisory includes an interactive incident response checklist, full Zero Trust control deep-dives with framework citations, and links to Agent Zeta — our free AI Zero Trust advisor.