Compare 13 TISAX implementation partners delivering Trusted Information Security Assessment Exchange programmes for automotive suppliers required to evidence information-security maturity to OEMs and tier-one buyers in the VDA ENX network. Engagements cover the scoping decision across assessment level AL1, AL2, and AL3, the VDA ISA self-assessment catalogue covering information security, prototype protection, and data protection, the gap remediation against ISO 27001 controls and the automotive-specific protection-of-prototypes clauses, the supplier-management programme for shared-data labels, the assessment-objective scoping including handling of confidential and strictly confidential information, the readiness for the audit by an ENX-accredited audit provider, and the post-assessment label maintenance on the ENX exchange. Listings cover Big Four advisories with automotive practices, German engineering and TUV firms, ENX-accredited auditors and audit providers, India-heritage SIs serving automotive captives, and the TISAX boutiques. No partner pays for placement on this directory.
TISAX programmes break into four typical workstreams. Scope and label selection, where the partner confirms the assessment objectives required by the OEM contract, agrees the assessment level (AL1 self-assessment, AL2 plausibility check, AL3 on-site audit), confirms whether the prototype-protection module is in scope for ER&D suppliers handling pre-series vehicle data, and decides the data-protection module triggers. Gap assessment and remediation, where the partner runs the VDA ISA catalogue against the existing ISMS, reuses ISO 27001 evidence where available, identifies the gaps on information security, prototype protection, and data protection, and runs the remediation across access management, encryption, supplier management, physical security, and incident response. Documentation and audit readiness, where the partner finalises the policies and procedures, the asset and data inventory, the supplier-assessment evidence, the prototype-handling workflows including access logs and physical-security controls, and the management-review and internal-audit evidence pack. Audit execution, where an ENX-accredited audit provider runs the assessment, the findings are remediated, and the label is published on the ENX exchange for OEM and tier-one buyer review.
Three procurement archetypes recur. Big Four firms with German automotive practices (Deloitte, PwC, KPMG, EY) lead at large tier-one suppliers where multi-site programmes coordinate across plants, ER&D centres, and shared-services hubs, and where the buyer wants integration with broader cyber and supplier-risk programmes. ENX-accredited TUV firms (TUV SUD, TUV Rheinland, DEKRA, DNV) cannot also implement the controls they audit but lead on the audit phase and on pre-assessment dry runs. Global and India-heritage SIs (Capgemini, TCS, HCLTech) lead on shared-service and captive TISAX prep where the supplier handles automotive workloads across delivery centres. German boutique consultancies (Secorvo, ISiCO) lead on first-time supplier readiness at the mid-market. Friction point: the prototype-protection module is qualitatively different from generic information security and assumes physical controls around restricted areas, vehicle storage, and pre-series component handling. Software-only suppliers asked to evidence prototype protection often discover their facility design will not pass on-site audit and require six to twelve months of physical remediation.
For complementary research see ISMS platforms, GRC platforms, supplier risk management, access management, and data loss prevention. For adjacent services see ISO 27001 implementation, NIS2 compliance, automotive IT consulting, data privacy and GDPR, cybersecurity services, and IT governance and compliance.
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