Customer Perspective: Testimonial from ARZ Haan AG

Feb 26, 2026
ENTRYZERO
ARZ Haan AG is one of the leading providers of billing services in the healthcare sector. With around 1,200 employees across more than 10 locations, the subsidiaries of ARZ Haan AG have been billing specialists for over 30 healthcare professions for decades. The group processes well over 100 million prescriptions annually for 18,000 customers throughout Germany, with a total billing volume exceeding €14 billion.
Impact
“ENTRYZERO showed us, above all, that vulnerability management is only truly effective when it is continuous. Instead of scanning infrequently as before and perhaps only realizing after a year that a vulnerability wasn’t properly addressed, we can now see almost in real time whether our measures are working. The platform gives us immediate feedback on changes made, making the effectiveness of our security process measurable and transparent.”
Nikolas Oelkrug-Alders, CISO of ARZ Haan AG
Conclusion
In this case too, we were able to support our partners through our innovative technology, our unique data foundation, and our years of expertise.

