Auditor Directory
C5 Auditors
Cloud Computing Compliance Criteria Catalogue (C5)
Browse accredited firms offering C5 audits. Filter by location, size, and budget.
14 firms — interactive filtering loads below.
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.
Mandiant Germany
Munich, Germany
Mandiant Germany offers ISO 27001, BSI C5, and NIS2 compliance for enterprise clients.
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.
secunet Security Networks
Essen, Germany
secunet is Germany's leading IT security company offering ISO 27001, BSI C5, and NIS2 compliance for enterprises.
Sogeti Cybersecurity
Paris, France
Sogeti Cybersecurity is a Capgemini subsidiary offering enterprise-grade compliance services across Europe.
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.
DEKRA
Stuttgart, Germany
DEKRA is one of the world's largest testing, inspection, and certification organizations offering ISO 27001, ISO 27701, and management system certifications globally.
DIN CERTCO
Berlin, Germany
DIN CERTCO is a German DAkkS-accredited ISO certification body offering ISO 27001, ISO 27701, and management system certifications for European organizations.
genua GmbH
Kirchheim, Germany
genua is a German IT security company offering ISO 27001 and BSI C5 compliance assessments.
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.
RSM Germany
Dusseldorf, Germany
RSM Germany provides SOC, ISO 27001, and BSI C5 compliance audits.
SECUINFRA GmbH
Berlin, Germany
SECUINFRA is a Berlin-based cybersecurity firm offering ISO 27001, BSI C5, and TISAX assessments.