BSI-Certified Auditors
Find accredited auditors for IT-Grundschutz, ISO 27001 on the basis of IT-Grundschutz, and BSI C5 cloud security attestations. All firms listed are officially certified by the German Federal Office for Information Security (BSI).
IS-Revision & IS-Beratung
BSI-certified service providers authorized to perform information security audits and consulting under the IT-Grundschutz methodology.
ISO 27001 (IT-Grundschutz)
ISO 27001 certification on the basis of IT-Grundschutz - the BSI standard for systematic information security management in Germany.
BSI C5 Attestation
Cloud Computing Compliance Criteria Catalogue (C5) attestations for cloud service providers demonstrating compliance with German security requirements.
TUV Informationstechnik (TUVIT)
GermanyIS-Revision & IS-Beratung
BSI-recognized test laboratory since 1991. Certified for IS-Revision and IS-Beratung under IT-Grundschutz, offering ISO 27001 audits on the basis of IT-Grundschutz.
Visit WebsiteTUV TRUST IT (TUV Austria Group)
GermanyIS-Revision & IS-Beratung
Part of the TUV Austria Group, certified by BSI for IS-Revision and IS-Beratung. Specializes in IT security assessments, BSI C5 attestations, and IT-Grundschutz audits.
Visit Websitesecunet AG
GermanyIS-Revision & IS-Beratung
Germany's leading IT security company and BSI-recognized test laboratory. Certified for IS-Revision and IS-Beratung, serving federal agencies and critical infrastructure.
Visit WebsiteHiSolutions AG
GermanyIS-Revision & IS-Beratung
Leading IT-Grundschutz specialist with 5 BSI-certified audit team leaders. Certified for IS-Revision and IS-Beratung, helping organizations achieve and maintain BSI certification.
Visit Websitesecuvera GmbH
GermanyIS-Revision & IS-Beratung
One of the longest BSI-certified IT security service providers (APS-9002). Specializes in IS-Revision, penetration testing, and IT-Grundschutz implementation.
Visit WebsiteKPMG AG WPG
GermanyIS-Revision, IS-Beratung & C5
Big Four firm certified by BSI for IS-Revision and IS-Beratung. Also performs BSI C5 cloud security attestations and ISO 27001 audits on the basis of IT-Grundschutz.
Visit WebsitePwC Cyber Security Services
GermanyIS-Revision, IS-Beratung & C5
PwC's dedicated cybersecurity unit, BSI-certified for IS-Revision and IS-Beratung. Performs C5 attestations, IT-Grundschutz audits, and comprehensive security assessments.
Visit WebsiteErnst & Young GmbH WPG
GermanyIS-Revision, IS-Beratung & C5
Big Four firm certified by BSI for IS-Revision and IS-Beratung. Provides IT-Grundschutz audits, BSI C5 attestations, and cybersecurity advisory for enterprises.
Visit WebsiteDeutsche Telekom Security
GermanyIS-Revision & IS-Beratung
Telekom's security arm, BSI-certified for IS-Revision and IS-Beratung. Provides IT-Grundschutz audits and security assessments for critical infrastructure operators.
Visit WebsiteBearingPoint GmbH
GermanyIS-Revision & IS-Beratung
Management and technology consultancy certified by BSI for IS-Revision and IS-Beratung. Helps public sector and enterprises with IT-Grundschutz implementation and audits.
Visit WebsiteSopra Steria SE
GermanyIS-Revision & IS-Beratung
European IT services company certified by BSI for IS-Revision and IS-Beratung. Supports government agencies and enterprises with IT-Grundschutz compliance.
Visit WebsiteInfodas GmbH
GermanyIS-Revision & IS-Beratung
German IT security firm certified by BSI for IS-Revision and IS-Beratung. Specializes in defense, public sector, and critical infrastructure security audits.
Visit WebsiteSecianus GmbH & Co. KG
GermanyIS-Revision & IS-Beratung
Boutique IT security firm certified by BSI for IS-Revision and IS-Beratung. Provides targeted IT-Grundschutz audits and ISMS implementation for mid-market companies.
Visit WebsiteAccenture GmbH
GermanyIS-Revision & IS-Beratung
Global consulting firm certified by BSI for IS-Revision and IS-Beratung. Delivers IT-Grundschutz audits and large-scale security transformation programs.
Visit WebsiteCGI Deutschland
GermanyIS-Revision & IS-Beratung
International IT services company certified by BSI for IS-Revision and IS-Beratung. Helps public and private sector organizations achieve IT-Grundschutz certification.
Visit Websitemsg systems ag
GermanyIS-Revision & IS-Beratung
German IT consulting group certified by BSI for IS-Revision and IS-Beratung. Provides IT-Grundschutz audits and ISMS consulting for financial services and public sector.
Visit WebsiteRodl & Partner
GermanyC5 Attestation
International audit and consulting firm specializing in BSI C5 cloud security attestations. Helps cloud providers and SaaS companies demonstrate compliance with German security standards.
Visit WebsiteRSM Ebner Stolz
GermanyC5 Attestation & IT-Grundschutz Certification
Major German audit firm performing BSI C5 attestations and ISO 27001 audits on the basis of IT-Grundschutz. RSM Certification is a formally listed BSI certification body.
Visit WebsiteDeloitte Germany
GermanyC5 Attestation
Big Four firm performing BSI C5 cloud security attestations and comprehensive cybersecurity assessments for enterprises and cloud service providers in Germany.
Visit WebsiteIABG GmbH
GermanyIS-Revision & IS-Beratung
German engineering and IT services firm certified by BSI for IS-Revision and IS-Beratung. Serves defense, aerospace, and critical infrastructure with security audits.
Visit Websitede-bit Computer-Service GmbH
GermanyIS-Revision & IS-Beratung
Specialized IT security firm certified by BSI for IS-Revision and IS-Beratung. Provides IT-Grundschutz audits and consulting for mid-market organizations.
Visit WebsiteUmbrella Unternehmensberatung
GermanyIS-Revision & IS-Beratung
German consultancy certified by BSI for IS-Revision and IS-Beratung. Supports organizations with IT-Grundschutz implementation, audits, and ongoing ISMS maintenance.
Visit WebsiteThis directory includes firms certified by the German Federal Office for Information Security (BSI) as IT security service providers, as well as audit firms performing BSI C5 attestations. Information is based on publicly available BSI certification lists. For the official and most current list, visit bsi.bund.de.
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