CHAIN-149 — Computer Vision endpoint without customer-managed key

Summary

Severity: Low · Likelihood: Medium · Logic: ALL

Why this chain matters

Computer Vision processes images containing PII (passports, licenses) but stores them with Microsoft-managed keys. A court order or Microsoft internal compromise could expose historical processed images.

Component rules

This chain fires when its trigger conditions are met by the following rules. Click any rule to see its detection logic and compliance mappings.

Rule ID	Role
zt_ai_007	Trigger
zt_data_006	Trigger

Attack walkthrough

Step 1 — Data processed without customer-controlled key.

Actor: Compliance failure
MITRE ATT&CK: T1213
Enabled by: zt_ai_007

Attacker gain: Data residency / control boundary breached.

Step 2 — Subpoena or insider access yields plaintext.

Actor: Legal event
MITRE ATT&CK: T1552.004
Enabled by: zt_data_006

Attacker gain: Regulatory exposure.

Blast radius

Initial access	Legal / infrastructure-level event.
Max privilege	Historical image content.
Data at risk	Processed image data
Services at risk	Computer Vision

How the logic works

The chain fires only when every rule above has at least one finding in the current scan. Missing any one rule breaks the chain — so remediating any single step disrupts the attack path.