AI vendor security
AI Vendor Security Checklist for Procurement Teams
Evaluate the system’s permissions and failure paths before you judge the polish of its answers.
Open the checklistFor people who want clear, evidence-backed answers on AI and IT Security, compliance and mandates are the daily reality, not a footnote. A regulation often forces the purchase, a board approves the spend, and the public sees the result. In 2026 the skill is proving compliance continuously, not reconstructing it before the auditor arrives.
Reviewed October 5, 2026 · Standards in force

Mandates arrive whether or not you are ready, and in 2026 several moved at once. EU AI Act enforcement began August 2, the AI Omnibus pushed high-risk deadlines out, Colorado replaced its AI law weeks before it took effect, and the Pentagon suspended CMMC Phase II. A team that prepares once a year will be compliant with last year’s rules. The durable approach is controls that are monitored automatically and evidence collected as the work happens.
B3 analysis. One control, monitored once, mapped to every framework that asks for it.
| Control | Annual audit prep (retire) | Continuous monitoring (2026) | Frameworks satisfied |
|---|---|---|---|
| Access reviews | Quarterly spreadsheet export | Daily identity-provider sync with automatic flags for orphaned and over-privileged accounts, including agent identities | SOC 2 CC6; ISO 27001 A.5.18; ISO/IEC 42001 |
| Vulnerability management | Scan report attached to the audit | Patch age and KEV exposure tracked against BOD 26-04-style timelines | SOC 2 CC7; ISO 27001 A.8.8 |
| Incident response | Plan document reviewed yearly | Tabletop results, timestamps and notification decisions logged as evidence | SOC 2 CC7.4; SEC Item 106; NIS2 |
| AI system inventory | Not tracked | Live register with risk tier, owner and transparency obligations | EU AI Act; ISO/IEC 42001; NIST AI RMF |
| Vendor risk | Annual questionnaire | Continuous monitoring of vendor attestations, breaches and sub-processor changes | SOC 2 CC9; ISO 27001 A.5.19–A.5.22 |
| Non-human identity governance | Service accounts listed once a year | Daily inventory of agents, service accounts and API keys with owner, scope, last use and expiry; stale identities auto-flagged | SOC 2 CC6.1–CC6.3; ISO 27001 A.5.16–A.5.18; ISO/IEC 42001 |
| Third-party breach notification | Wait for the vendor's letter | Vendor breach feed tied to a notification register with state clocks and decision owners | State breach laws; SOC 2 CC9.2; HIPAA where applicable |
| AI incident classification | Treated as an IT ticket | Written decision tree mapping AI events to breach, SEC and sector clocks, with a named decision owner and preserved evidence | State breach laws; SEC Form 8-K Item 1.05; NIST AI RMF Manage 4 |
| External exposure evidence | Annual penetration test report | Continuously reconciled inventory of exposed systems with owners, authentication method and unauthenticated paths, producible on request | CIS Controls 1 and 12; NIST CSF 2.0 ID.AM; regulator inspection orders |
This is one of the six domains in the readiness assessment. See where your organization actually stands.
Take the readiness assessmentAfter suspected AI-assisted breaches at seven Korean financial firms, President Lee Jae Myung ordered a thorough investigation, and regulators told banks and card companies to inspect every externally exposed system, unauthenticated path and authentication gap and report back.
Test now: Ask for your organization's list of externally exposed systems with owners and authentication methods. Time how long it takes to produce.
Read the October 5 brief →Curated public-sector and regulated-technology speeches, each with buyer-side commentary.
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