AN

ANTSEN

ANTSEN UG

Kleinmachnow, Germany

Penetration TestingIdentity & AccessNetwork SecurityData Protection
Founded 2018Serves Critical Infrastructure
Profile last updated: October 14, 2026

About

Founded in 2018, ANTSEN is a cybersecurity company based in Kleinmachnow, Germany working in penetration testing, identity & access, network security +2 more.

ANTSEN is a German cybersecurity consultancy founded in Berlin in 2018 by practitioners with a combined 50 years of experience in IT infrastructure and security. It is now based in Kleinmachnow. The company focuses on individual cybersecurity consulting and support to improve the security of IT infrastructures. Its services include open source transformation and strategy, including endpoint, open source server and Unix/BSD-based firewall systems; design and implementation of PKI solutions in demanding environments such as decentralised or offline setups, extending through the software and hardware stack to endpoints and user authentication; biometric and NFC/RFID access control systems, including Windows Hello face authentication and physical site security; security audits, penetration testing and redesign of IT infrastructures, production environments, data flows and disaster recovery processes; and roadmap development based on analyses. For healthcare, ANTSEN audits and pen-tests medical products and devices, supports certification of medical devices and related software, and advises on patient data security and regulatory compliance. It also offers critical infrastructure defence and custom pentesting. The company offers its own products, P3KI and NOMOI.

Location

Kleinmachnow, Germany

Founded

2018

Legal name

ANTSEN UG

Registration

HRB 31803 (Amtsgericht Potsdam)

VAT number

DE322353052

Focus areas

PKIPenetration testingOpen sourceAccess controlMedical device securityCritical infrastructureOT securityCyber defenseBiometric authentication

Languages

DE

Services & products

Security domains

Penetration TestingIdentity & AccessNetwork SecurityData ProtectionGRC & Compliance

How they deliver

ConsultingProfessional Services

Products

P3KI

Authorization & authentication

Next-generation authorization and authentication for OT and IT environments.

NOMOI

Network of Mandated Operational Invariants.

Customers

Critical Infrastructure

Industries served

HealthcareMedical Devices

Compliance & partners

Technology partners

SiemensMicrosoft

People

Management & team (1)

Other cybersecurity companies in Germany

View all