Our Team

Who We Are?

Zeutro is a small business founded by a team of expert cryptographers for the purpose of commercializing advanced data security solutions.

Susan Hohenberger Waters
Chief Executive Officer / CEO

Dr. Susan Hohenberger Waters is a co-founder and CEO of Zeutro, LLC. She received her Ph.D. in Computer Science from the Massachusetts Institute of Technology in 2006. Prior to joining Hopkins, she was a post-doctoral researcher at IBM. She has served as an independent security consultant for multiple Fortune 1000 companies.

Dr. Hohenberger Waters’ research focuses on the design of practical cryptographic solutions to common computing problems. She publishes and has served on the program committees of the top technical security venues, with multiple papers invited to appear in the Journal of Cryptology. Her work has been covered by Scientific American, The Economist, Slashdot and the BBC.

She is the recipient of an NSF CAREER award, a Microsoft Faculty Fellowship and a Google Faculty Research Award. She currently holds a research professorship at Johns Hopkins University.

Matthew Green
Chief Technology Officer / CTO

Dr. Matthew Green is a co-founder and CTO of Zeutro, LLC and an Assistant Professor at Johns Hopkins University. He received his Ph.D. in Computer Science from Johns Hopkins University in 2008. A former Technical Staff member at AT&T Laboratories, in 2004 Dr. Green co-founded a custom software security consultancy (Independent Security Evaluators, Inc.), where he served as CTO until 2011. In this capacity he oversaw the design and analysis of cryptographic security systems for multiple Fortune 50 clients. During his tenure as CTO, the company grew from a new startup to a multi-million dollar business with a staff of fifteen technical experts.

Dr. Green has published a number of patents and dozens of peer-reviewed technical papers. His work on industrial security systems has received nationwide coverage in the New York Times, the Wall Street Journal and Washington Post.


Brent Waters
Chief Scientist

Dr. Brent Waters is a co-founder and Chief Scientist of Zeutro, LLC and an Associate Professor at the University of Texas at Austin. He received his Ph.D. in Computer Science from Princeton University in 2004 and from 2004-2005 was a post-doctoral researcher at Stanford University.

Dr. Waters' research interests are in the areas of cryptography and computer security. He has published over 100 peer-reviewed technical papers. His publications include multiple award-winning papers and have successfully led to numerous patents.

Dr. Waters received the Presidential Early Career Award for Scientists and Engineers (PECASE), which is the highest honor bestowed by the US government on young researchers, for his foundational work on Functional Encryption. Dr. Waters is also a National Academy of Sciences Kavli Fellow, an NSF CAREER award recipient, a Microsoft Faculty Fellow, a Sloan Research Fellow and a Packard Foundation Fellow.

Joseph Ayo Akinyele
Research Scientist

Dr. Joseph Ayo Akinyele is a Research Scientist at Zeutro, LLC. He received his Ph.D. in Computer Science from Johns Hopkins University in 2013. In 2007, he earned an M.S. in Software Engineering from Carnegie Mellon University. Subsequently, he worked at the JHU Applied Physics Laboratory as a software engineer, where he helped develop high assurance platforms for DoD sponsors utilizing trusted computing technology. He has also worked at the MIT Lincoln Laboratory where he helped implement real-time key management solutions for unmanned aerial vehicles.

Dr. Akinyele specializes in the efficient implementation of cutting-edge cryptographic libraries and automation tools. He is currently the lead developer of Zeutro's Toolkit and previously was the lead developer of Charm, a cryptographic software library used by researchers in academic institutions around the world.