the People behind the Services


Ralph Woern
Ralph WoernChief Executive Officer
As Chief Executive Officer of Adsigo AG he acts as a management advisor and PIN Security auditor for our clients. Benefit from his 20-year-PCI experience and more than 30 years of professional experience in the payment industry. His former engagements were, inter alia:

– Head of Unit PCI certification at TUV SUD
– CEO of Acertigo AG
– Head of PCI compliance and payment systems at Excelsis
– Head of Business Unit ePayment at Telecash GmbH
– Payment Consultant (self-employed)

Dr. Stephan Engelke
Dr. Stephan EngelkeChief Operation Officer
As Chief Operation Officer of Adsigo AG he is responsible for the operational area of the audit execution. Together with his team of auditors he can look back on a total of more than 40 years of audit experience in the various PCI standards. His former engagements were, inter alia:

– Department Head of PCI certification at TUV SUD
– COO of Acertigo AG
– Lead Auditor at Excelsis
– Consultant at an IT consulting company
– Audit assistant at a financial audit company

The Team

With over 40 years of experience in total and more than 750 assessments completed in the PCI field, our auditors and consultants are certified experts and they are there to advise and assist you. The QSAs have multiple accreditations for the PCI DSS, PA-DSS, PCI P2PE, Verified by Visa and PCI PIN Security PCI standards so that they can advise clients professionally and competently and deliver high-quality services across all areas during an audit. Together with their many years of professional experience, this ensures that an audit or consultation takes account of all factors that are relevant for a client and the client achieves the best possible results.

Through our staff development and advanced training, we place emphasis on well-established qualifications. For example, our auditors hold the internationally recognised IT security certifications of the ISACA organisations (CISA, CISM, CGEIT, CRISC) and ISC² (CISSP). In addition, we train our colleagues in the IT security products that are typically used by clients, via internal and external courses. Attendance at trade events and conferences adds the finishing touch to their continuous professional development.

We are able to offer our international clients, who come from more than 15 European companies, expertise in local conditions and payment technologies. Thanks to their many years of working in the PCI field, our staff are valued partners of both the card organisations and our clients.