Answering MSP Vendor Security Questionnaires with Evidence

Enterprise and government customers send vendor security questionnaires-hundreds of yes/no questions about encryption, access control, logging, BC/DR, and certifications. MSP SaaS vendors (including Trustholm) fail reviews when they answer with marketing adjectives instead of verifiable evidence.

This resource teaches practitioners to respond using Shipped/Gap framing from our product evidence map-what a reviewer can open in trial or call on the API today.

Stop leading with certification

Unless you hold an active report, do not answer "SOC 2?" with "yes." Trustholm's honest answer: provide technical artifacts for customer assessment; vendor SOC 2 Type II not claimed on marketing site.

Same for ISO 27001, IRAP, Essential Eight, FedRAMP. Customers map your artifacts to their programs.

Build a standard evidence pack

Reuse across questionnaires:

1. Trust hub Shipped/Gap tables (security, isolation, audit, IAM, signing)
2. Architecture diagram (schema-per-tenant, JWT binding, agent credentials)
3. Redacted audit export sample (JSON/CSV)
4. Security Center screenshot
5. Subprocessor list and data residency summary
6. Limitations appendix (WORM audit, Sentinel connector backlog)
7. Pentest summary if your security program publishes one-do not invent

Map questions to evidence rows

| Questionnaire theme | Trustholm evidence | |--------------------|-------------------| | Logical access | Users/roles, SSO, MFA, JWT tenant binding | | Audit logging | GET /api/audit/export, /audit UI | | Data segregation | Schema-per-tenant, DedicatedDatabase option | | Integrity | Script signing enforcement | | Availability | Customer pairs with infra monitoring; rate limits shipped | | Incident response | Customer IR runbook + audit for forensics |

When the answer is "partial" or "customer responsibility"

Questionnaires often lack nuance fields. Use comment boxes:

• "Partial: HTTP logs enrich tenant_id; native Sentinel connector backlog."
• "Customer responsibility: IdP deprovisioning and endpoint patch mitigations."
• "Gap: WORM immutability not shipped; compensating controls listed in attachment."

Reviewers trust nuance more than false "full compliance."

MSPs reselling Trustholm to their clients

If you are the vendor of record to an end-customer, merge Trustholm artifacts into your responses with clear inheritance boundaries. Your SSP covers how your technicians use the platform; Trustholm docs cover product capabilities.

Speed tactics for sales engineering

• Maintain versioned ZIP of evidence pack updated when trust hub changes
• Link to specific trust pages instead of homepage
• Offer trial walkthrough call for security team-reproducible beats PDF
• Track recurring questions to feed product and docs backlog

Red flags that trigger deeper review

Overclaiming certification, hiding subprocessors, or refusing export samples lengthens procurement. Honest Gap rows shorten cycles because assessors plan compensating controls early.

Template comment snippets for common questions

2+ for portal and API; confirm cipher suites in deployment doc. Encryption at rest: hosting-provider dependent-attach operator attestation.

Penetration testing: share customer-commissioned summary under NDA when available; do not attribute results Trustholm has not published. Business continuity: pair product availability features with customer DR playbook.

Access reviews: customer IdP and Trustholm role exports quarterly.

Questionnaire version control

Name evidence ZIP files with trust hub version date and hash of redacted audit sample. When customers send follow-up questions, diff against prior submission rather than rewriting from scratch-consistency reduces assessor confusion. Maintain FAQ log of recurring customer questions to feed product and documentation backlog without inventing new certification claims in responses.

Trust hub cross-reference

Attach /trust/security Shipped/Gap export to every questionnaire response ZIP. Update version stamp when trust pages change.

Appendix: evidence reproduction steps

Assign a reviewer to open trial tenant, navigate documented UI paths, and capture screenshots with timestamps. Export audit JSON for same session.

Store in immutable GRC folder. Compare results to this article quarterly.

When Shipped/Gap rows change in trust hub, re-run reproduction within ten business days. Attach limitations memo for WORM audit and Sentinel connector backlog.

Include DB operator access policy from hosting provider. Pair technical evidence with customer governance documents-policies, pentest summaries, IR runbooks.

Never substitute marketing copy for reproduced checks in front of assessors. Treat this appendix as a living runbook section owned by security engineering, not a one-time audit artifact.

Schedule annual refresh aligned with trust hub version stamps and major product releases. Link each reproduction run to a change ticket for traceability.

Distribute updated article PDFs to customer-facing teams when dateModified changes. Archive prior versions for twelve months to support assessor lookback questions.

When citing this article externally, include dateModified and pillar metadata in footnotes so readers know content freshness. Internal enablement should link pillar tags to trust hub sections for consistent customer messaging.

Add article slug to internal wiki index for sales engineering quick lookup during live questionnaire calls.