Penetration Test
Penetration Test
Application penetration test, code review, reverse engineering and APT test against cyber threats
Proactively protect your web shop, internet banking platform, mobile app, ICS (SCADA / DCS) or IT infrastructure via penetration test, code review, reverse engineering or APT test by our certified penetration testers and security researchers.
ISO 27001 Security Audit
ISO 27001 Security Audit
ISO-compliant assessment of your information security landscape
Analyze and benchmark your information security level based on international standards (ISO 27001, ISO 27002, SANS 20, IEC 62443, NERC CIP, etc.) to plan your IT budget for security mitigation measures.
IT Forensics
IT Forensics
Court-proof investigation of cyber attacks and unwanted digital activities
Respond appropriately and effectively to malware infection, hacker attack, fraud, data theft and other criminal or unwanted digital activities with the support of our certified digital forensics experts.

Oneconsult AG is a renowned Swiss cyber security consulting company with approx. 25 employees, offices in Switzerland and Germany, a customer base of 300+ organizations and 1100+ completed security projects worldwide. We are your trustworthy partner for a holistic cyber security approach against external and internal threats such as APT, hacker attacks, malware infection, digital fraud and data leakage. Our core services are penetration tests, ISO 27001 security audits and IT forensics. To protect your organization and mitigate specific information security risks, Oneconsult also offers practical security consulting, security training and virtual security officer services. We have dedicated IT security researchers and a  large team of certified penetration testers (OPST, OSCP, etc.), digital forensics experts (GCFE, GREM) and ISO security auditors (ISO 27001 Lead Auditor).

Events 2016 Slides & Podcast

badGPO – Using GPOs for Persistence and Lateral Movement: Slide deck and podcast of Oneconsult talk by Yves Kraft and Immanuel Willi 2016: Slides /

10-11-2016: DeepSec IDSC 2016 Europe (Vienna) – Oneconsult Talk

“badGPO – Using GPOs for Persistence and Lateral Movement” by Yves Kraft and Immanuel Willi:

News & Advisories

19-10-2016: Visit us at the Swiss Cyber Storm 2016 (Lucerne)

Oneconsult AG is again sponsoring the international IT security conference “Swiss Cyber Storm“, taking place on 19 October in Lucerne. Oneconsult customers profit from a 15% discount on the conference ticket. Contact us for the discount code on: +41 43 377 22 22.

(Junior) IT Forensics Specialist

(f/m, 80 – 100%, Thalwil): Your exciting new job at Oneconsult? If you are a native German speaker, we are looking for you to strengthen our top-flight IT forensics team. [more]

Pen Tester's Diary

HTTP Referer Header: How web browsers compromise private URLs

by Fabian Gonzalez

The HTTP Referer header was defined to determine the origin of a user’s request on the server side. As such, today’s web browsers use this header to communicate the last visited resource when requesting a new one. Since it is often written to a server’s access log, the header may be evaluated or used for other purposes. This may result in security issues. The author describes the problem and provides simple solutions. The article is available in German. [more]

Breaking the gateways – abusing dual-homed SCADA/ICS systems

by Jan Alsenz

Gateway systems with connections to different network segments are common in SCADA/ICS networks, as found in manufacturing plants or power / water management. [more]

Our customers value our expertise and vast project experience of over


Penetration test projects, over 750 of which OSSTMM-compliant


Application penetration tests of banking solutions, online shops, ICS (SCADA systems / DCS), SAP installations, ERP and CRM solutions, CMS, VoIP systems, etc.


Security auditse.g. according to ISO 27001, ISO 27002, industry specific guidelines (ISO 27015, 27019, 27799, etc.) or SANS Critical Security Controls


IT forensics and incident response projects

Methods and Standards

Our approach is customized to meet our clients’ specific needs as well as based on «best practice». In addition to our own methods, we also rely on industry-proven standards.


Oneconsult AG
Schuetzenstrasse 1
8800 Thalwil

Tel +41 43 377 22 22
Fax +41 43 377 22 77

Oneconsult AG
Baerenplatz 7
3011 Bern

Tel +41 31 327 15 15
Fax +41 31 327 15 25


Subsidiary of Oneconsult AG
Karlstrasse 35
80333 Munich

Tel +49 89 452 35 25 25
Fax +49 89 452 35 21 10