Johannes Ullrich

{{Short description|Computer security expert}}

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| nationality = American

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| occupation = Computer Security Expert

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Johannes Ullrich is the Dean of Research for SANS Technology Institute, a SANS Faculty Fellow, and founder of the SANS Internet Storm Center (DShield), a global network security community. In 2004, Johannes was recognized as one of the Top 50 Most Powerful People in Networking by Network World Magazine.{{Cite web |title=Dr. Johannes Ullrich {{!}} SANS Institute |url=https://www.sans.edu/profiles/dr-johannes-ullrich/ |website=www.sans.edu}}

Johannes grew up in Germany and moved to the US where he obtained a Ph.D. in physics from the University at Albany. His work on x-ray optics was awarded a number of research grants by NASA and the Department of Energy. He also authored a chapter in the Handbook of Optics.{{cite web | url=http://sbir.gsfc.nasa.gov/SBIR/abstracts/96/sbir/phase1/SBIR-96-1-13.01-5250.html | title=Lower Power X-ray Diffraction Unit for Planetary Landers}}{{cite web | url=https://sbirsource.com/sbir/people/47605-johannes-ullrich | title=Johannes Ullrich - X-ray Optical Systems, Inc. - SBIR Source}} He also was the recipient of the ISSA's 2018 President's Award for Public Service.{{cite web | url=https://www.members.issa.org/page/Awards |title = Information Systems Security Association}}