Auditor Directory
TISAX Auditors
Trusted Information Security Assessment Exchange
Browse accredited firms offering TISAX audits. Filter by location, size, and budget.
24 firms — interactive filtering loads below.
BSI Group
London, United Kingdom
BSI Group is the world's leading standards and certification body, providing ISO 27001, ISO 22301, and other management system certifications globally.
Bureau Veritas
Paris, France
Bureau Veritas is a world-leading testing, inspection, and certification company providing ISO 27001 and management system certifications in 140+ countries.
Deloitte
London, United Kingdom
Deloitte is the world's largest professional services firm, offering audit, assurance, tax, and advisory services across 150+ countries worldwide.
Deloitte Tohmatsu
Tokyo, Japan
Deloitte Tohmatsu is Deloitte's Japanese member firm and one of Japan's largest audit firms, providing Big Four services including J-SOX and ISMAP compliance.
DNV
Oslo, Norway
DNV is a global assurance and risk management company providing ISO 27001, ISO 22301, and management system certifications across 100+ countries worldwide.
Ernst & Young (EY)
London, United Kingdom
EY is a Big Four professional services firm providing audit, assurance, tax, consulting, and strategy services across more than 150 countries worldwide.
EY Germany
Stuttgart, Germany
EY Germany is a Big Four professional services firm providing ISO 27001, C5, TISAX, SOC 2, and GDPR compliance services to German enterprises, automotive companies, and financial institutions.
KPMG
Amstelveen, Netherlands
KPMG is a Big Four professional services firm providing audit, tax, and advisory services through a global network spanning 143 countries and territories.
LRQA
London, United Kingdom
LRQA is a global assurance and certification provider specializing in ISO 27001, ISO 22301, cybersecurity, and management system certifications worldwide.
Mazars
Paris, France
Mazars is an international audit, tax, and advisory firm operating as an integrated partnership across 95+ countries with 47,000+ professionals.
PricewaterhouseCoopers (PwC)
London, United Kingdom
PwC is one of the Big Four professional services firms, providing audit, assurance, tax, and consulting services to major organizations in 152 countries.
PwC Germany
Frankfurt, Germany
PwC Germany is a Big Four professional services firm providing ISO 27001, C5, TISAX, SOC 2, and GDPR compliance services to German enterprises across automotive, manufacturing, technology, and financial services.
SGS
Geneva, Switzerland
SGS is the world's largest testing, inspection, and certification company, providing ISO 27001 and management system certifications across 140+ countries.
TUV Rheinland
Cologne, Germany
TUV Rheinland is a world-leading German certification and testing body providing ISO 27001, TISAX, and management system certifications across 60+ countries.
TUV SUD
Munich, Germany
TUV SUD is a leading German testing, inspection, and certification body providing ISO 27001, TISAX, and management system certifications across 50+ countries.
A1 Digital Austria
Vienna, Austria
A1 Digital Austria offers ISO 27001, NIS2, and TISAX compliance assessments for Austrian enterprises.
BDO Germany
Hamburg, Germany
BDO Germany is a leading mid-market audit and advisory firm providing ISO 27001, C5, TISAX, SOC 2, and GDPR compliance services to German mid-market companies and the Mittelstand.
cirosec GmbH
Heilbronn, Germany
cirosec is a German cybersecurity firm specializing in ISO 27001, BSI C5, and TISAX assessments.
DQS
Frankfurt, Germany
DQS is a German-headquartered global certification body offering ISO 27001, TISAX, ISO 27701, and management system audits across 60+ countries.
Intertek
London, United Kingdom
Intertek is a global quality assurance provider offering ISO 27001, ISO 22301, and management system certifications through operations in 100+ countries.
Roedl & Partner
Nuremberg, Germany
Roedl & Partner is a German mid-market professional services firm providing ISO 27001, TISAX, C5, and GDPR compliance services to the Mittelstand and international businesses with German operations.
Schellman (EU Office)
Frankfurt, Germany
Schellman EU is the European office of Schellman & Company, providing SOC 2, ISO 27001, GDPR, and C5 compliance audits for European technology companies.
SECUINFRA GmbH
Berlin, Germany
SECUINFRA is a Berlin-based cybersecurity firm offering ISO 27001, BSI C5, and TISAX assessments.
TUV Nord
Hanover, Germany
TUV Nord is a German certification body providing ISO 27001, TISAX, and management system certifications with strong European and Asian market presence.