Test your critical third parties.
Test your whole critical-vendor list, not just a sample of five.
Quick, scoped to the actual contracted service, and easy enough that vendors actually finish. Generate audit-ready evidence for DORA, CPS 230 and third-party risk reviews - plus proof your suppliers are operationally ready to do business with your company.

Why TPRM shouldn't stop at the questionnaire
Compliance, not resilience
Policies confirmed. Certifications collected. Once-a-year reviews against a generic checklist. Whether any of it works under stress, against the actual contracted service, is never tested.
Vendors are willing to do this with you
Most welcome the invitation. They need the same evidence for their own audits, regulators and customers. A Handrails session is the easiest yes on your TPRM program.
Ongoing, independent, evidence-based
Regulators are increasingly explicit: third-party assurance must be ongoing, scenario-based and independently verified. Annual reviews and vendor-supplied attestations no longer count as evidence on their own.
Test the supplier. Don't just review the questionnaire.
Questionnaire-based vendor assurance.
- Annual questionnaire confirms policies exist
- Generic responses rarely reflect the actual contracted service
- Escalation paths, notification obligations and response responsibilities never exercised
- First real test happens during a live incident
Continuous supplier readiness testing
- Holly runs a live video session scoped to the actual contracted service
- Contract obligations, escalation paths and response expectations actually exercised
- Operational readiness evidence generated automatically during the session
- Re-runnable on the cadence you set across your whole critical-vendor list
Often run alongside credentialing partners and consultancies who use Handrails to extend their own programs. See Partner with Handrails.
The operational controls regulators, enterprise customers and supply-chain partners increasingly expect to be tested.
Major retailers and enterprise customers increasingly expect suppliers to demonstrate operational readiness across recalls, escalation paths, continuity, cybersecurity, incident response and customer communication processes. Handrails helps companies test whether suppliers can actually respond under pressure, not just complete onboarding questionnaires and annual attestations.
Defense primes increasingly need evidence that subcontractors, technology providers and operational partners can respond under pressure across cybersecurity, continuity, escalation and incident response obligations. Handrails helps defense organizations test whether suppliers can actually operate within the requirements of modern defense supply chains, not just attest to policies on paper.
Regular testing of the ICT risk management framework and digital operational resilience, including scenario-based exercises with critical ICT third-party providers.
Together, CPS 230 and CPS 234 require ongoing assurance that material service-provider controls hold under stress, including severe-but-plausible scenario testing, and that incident response involving outsourced arrangements involving client information can actually be evidenced, including notification timelines where they apply.
One process. Run it across your whole vendor list.
Scope it to the contracted service.
Upload the supplier contract and confirm the integration surface. Holly maps the contracted service, the data flows and the obligations on both sides. The scenario pressures the exact moment a vendor incident becomes yours.

Virtual session with the vendor
Holly hosts a live video call with the vendor's nominated team. Their security lead, their CSM, their incident responder, whoever owns the relationship from their side. Holly asks the questions, presses for evidence, requests screen-share where it matters, and keeps the clock so the session finishes inside the agreed window.
Report out
A standardised report mapped to your regulatory obligations, written while the call runs. The client receives the report; the vendor can review and sign off if you want. Re-run on the cadence you set, across the whole list.
Apples-to-apples evidence across the base.
Audit-ready report per vendor
Mapped to the clauses in scope for your regulatory regime. Written while Holly runs the session. Filed straight into your TPRM evidence folder.
Contract-clause test log
Evidence of the breach-notification SLA, incident definition and cooperation clause actually being exercised. Not just that they exist on paper.
Comparable gap analysis across the base
Every vendor on the same axes. Boards and regulators get a single view of where your critical-vendor exposure actually sits.
Re-run baseline
Spot a gap. Fix it. Re-run the session. Confirm closure. Resilience as a living program, not an annual one-off.
Turn supplier assurance into continuous readiness testing.
Continuously test the resilience of your supplier network.
Run scalable simulations across suppliers, outsourced providers and critical partners.