How to reach us?

[T] +43 664 1871566 (Christoph Herbst)

Yagoba GmbH
Beethovenstraße 20
8010 Graz, Austria

[CRN] FN 395443 i, LG Graz
[UID] AT U67906288

Who is Yagoba?

Yagoba GmbH was founded in April 2013 in Graz, Austria, by three former university colleagues. Beginning of 2023 Christoph Herbst joined the management team and Manfred dropped out of daily business. Since May 2013 we executed more than 90 projects to the full satisfaction of our customers. Our developments are regularly certified for electronic payment systems. We are known as reliable partner for highly efficient code that meets highest security and quality standards. Together with our clients we define the requirements, timelines, interfaces and functionality to work as reliable and independent partner.

Picture of Stefan

Stefan Tillich, CTO

Stefan’s position at Yagoba is CTO (Chief Technology Officer), leading the product development and implementation. He is our expert for secure and efficient implementation. If you require support for payment applets (contact and contact-less application on cards or NFC modules), Stefan is the guy you need. In case you have performance problems with your Java Card applet running on a specific controller, talk to him. Stefan studied computer science with an emphasis on security and digital hardware design. He worked as postdoc researcher at the University of Bristol in the team of Nigel Smart, and published around 50 articles about the design of security hardware, SCA analysis and protection, microprocessor architectures and similar topics in high-ranked scientific literature.

Picture of Thomas

Thomas Popp, CSO

As CSO (Chief Science Officer) Thomas ensures that Yagoba stays ready for the future. Beside his activities together with our academic partners, he is responsible for development of our staff. Additionally he leads development of our test environment. As former patent consultant, he also covers all our innovation and IP topics. Thomas studied computer science ("Telematik") with an emphasis on IT-security and digital hardware design of SCA-resistant crypto circuits. His focus during his PhD and postdoc research were SCA-resistant logic styles. Thomas is co-author of the "DPA Book": Power Analysis Attacks - Revealing the Secrets of Smart Cards. After his academic career, Thomas worked as a patent engineer and IP consultant at Anwälte Burger & Partner.  

Picture of Christoph

Christoph Herbst, CAO

Christoph's position at Yagoba is CAO (Chief Administrative Officer). In January 2023 he took over the responsibilities from Manfred Aigner. Christoph cares for CCC (customers, contracts, and coffee). Additionally, he is responsible for project management of key projects, as well as application for and management of funded research projects. Most importantly, he makes sure that staff, management and shareholders stay happy and motivated. Christoph studied computer science focusing on applied security. He has a long history in security architecture, certification, and evaluation of embedded secure systems.He gained his experience on vendor side as well as on evaluation lab side.

Want to work with us?

We are hiring and in case you want to participate on our journey, send us your CV and answer the following questions:

1. Why do you want to join Yagoba?
2. What do you expect from your future at Yagoba?

Want to verify our S/MIME signed emails?

You can find our public key certificate of our Yagoba CA here

Serial Number (hex): 0090 0F87 A67D 8A55 AB
Fingerprint: D8EF 87A5 2B78 1324 6363 D0B1 40B5 F61A 3C3C 406D


How to send us confidential information?

Whenever reasonable, we use PGP for confidential and authenticated communication via email. Try GnuPG or the last version the the PGP Freeware in case you do not yet use PGP. Send us your Public Key via Email and provide a published phone number for verification of the Fingerprint. We will call you for verification.

Stefan's Public

Key ID: 5A78 86EB BEE6 9833
Fingerprint: 3EB7829A90E61CE40
asc File 1.67 KB


Thomas' Public

Key ID: 3FA8 2FC2 73B1 32C1
Fingerprint: 061D39955955AADD
asc File 1.41 KB


Christoph's Public

Key ID: DEED 5AE6 0BE5 C9B5
Fingerprint: 9F0094B6D7880B 94B9ED94589A802A51BBCCF3C6
asc File 3.12 KB


Sandra's Public PGP Key

Key ID: 9CBA 2725 6036 059B
Fingerprint: 207D 7C42 84E3 448F
47C6 D1A9 CBA2 7256 0360 59B
asc File 3.91 KB


Karin's Public PGP Key

Key ID: 2602 4DAE 7411 836B
Fingerprint: 6F90 D263 0D47 657F
6662 99CA 2602 4DAE 7411 836B
asc File 1.63 KB


Bernhard's Public PGP Key

Key ID: A1B2 45B3 96F1 EF24
Fingerprint: 1B16 3A84 B67A 3901
9D03 F619 A1B2 45B3 96F1 EF24
asc File 1.69 KB


Helmut's Public PGP Key

Key ID: DC03 64E0 5D03 D0BC
Fingerprint: C061 B4BE 4277 8366
4164 04A9 DC03 64E0 5D03 D0BC
asc File 3.11 KB


Max' Public PGP Key

Key ID: CF46 AD27 1E78 9C2A
Fingerprint: A49B D360 1F5C 0CBF
7D41 6197 CF46 AD27 1E78 9C2A
asc File 3.11 KB


Srdjan's Public PGP Key

Key ID: 2C63 0B7F 9920 8084
Fingerprint: 6E9A 77DF B457 C419 FA69 835E 2C63 0B7F 9920 8084
asc File 3.14 KB


Michael's Public PGP Key

Key ID: BA4C 6F3A DA17 052C
Fingerprint: AA0F 9C52 7A33 5338
F738 692C BA4C 6F3A DA17 052C
asc File 3.12 KB


Nives' Public PGP Key

Key ID: 2002 03DE 87C2 BB6C
Fingerprint: 4A65 8595 74FE 4681 1A45 18A1 2002 03DE 87C2 BB6C
asc File 3.12 KB