What we do best

Commercial Services

Providing Internet security solutions to organizations around the world

Expert Advice

Explaining the “who” and “why” of the Internet

Community Services

No-cost tools and services designed to assist the security professional

Our story

Team Cymru was formed in 1998 by Rob Thomas as a security think tank, learning the "who and why" of malicious Internet activity. This focus on attribution resulted in the uncovering of the "what, when, where, and how" of online malevolence.

Incorporating in 2004 and opening our doors for business in 2005, we have over a decade of experience and expertise at providing unparalleled threat intelligence, tools, and insight for security vendors, network defenders, incident responders, and analysts.

From the beginning, we believed in doing things differently. Team Cymru focused on obtaining unique access and partnerships that served as the foundation for our mining and refining capabilities. Due to our distinct positioning, our clients are able to perform in-depth and broad-based analysis based on our incomparable data.

We are incredibly proud of the breadth and depth of the various ways we continue to support the work our clients do all over the Internet.

Meet our leadership team

Rabbi Rob Thomas


Rabbi Rob Thomas is CEO and founder of Team Cymru, and a Cymru Fellow. Rabbi Rob has worked as a network engineer, Unix kernel developer, systems administrator, and security architect at companies as diverse as Motorola, Sun, Cisco, and Ameritech. Rabbi Rob has a passion for all things technical, and it shows in his dynamic writings and presentation style. Rabbi Rob believes strongly in community, serving on the boards of organizations such as the Tor Project. Rabbi Rob is proud to serve as CEO for this motivated team of Internet security analysts.

Jeff Vosburg

President & COO

Jeff Vosburg is COO of Team Cymru. Jeff has worked as a technology executive and leader in industries as diverse as legal, financial services, telecom, ISV and manufacturing. Jeff's passion is leading diverse, talented, driven people based on an entrepreneurial spirit, collaboration and 'can do' attitude. His experience in growing progressive teams is being joyfully applied to this unique and gifted group of experts. Jeff received an engineering degree from Purdue University in 1982 and executive management training from Kellogg School of Management in 2005.

Dave Deitrich


Dave Deitrich is CTO and co-founder of Team Cymru, and a Cymru Fellow. He received his Bachelor's degree from the University of Illinois in 1993 and his Masters' degree from the Georgia Institute of Technology in 1995, both in Computer Science. Dave has worked as a network engineer and network security guru for Motorola, IBM and Cisco Systems before becoming a founding member of Team Cymru in 2005. He has a wide range of experience with different operating systems, network platforms and programming languages.

Jerry Martin


Jerry Martin is the CISO for Team Cymru. He spent 21 years in the United States Air Force and in his final assignment, Jerry served as Director, Technical Analysis Branch at the Joint Task Force for Computer Network Operations (JTF-CNO). He has authored papers for a number of government seniors and has presented talks in many different forums. After retiring from the Air Force, he worked at DHS' National Cyber Security Division.

Dave Munson


Dave Munson is the CIO for Team Cymru. Dave has over 20 years of experience operating and managing networks and server environments. Dave started his career at Motorola and spent several years with IBM's Global Services. Most recently Dave has worked with several successful startup companies developing and enhancing their IT infrastructure and organizations in accordance with stated business goals.

Tim Jones


Tim Jones is CFO for Team Cymru. He received his Bachelor's degree in Math / Computer Science from the University of Illinois in 1985. Tim has worked in systems programming, network engineering, technology strategy, and mergers & acquisitions for Sears Technology Services and IBM. He has a wide range of experience with different technology platforms, operating systems, and programming languages, as well as business operations and partnership management.

Rich Cummings

General Counsel

Rich is Team Cymru's corporate lawyer. Rich received his Juris Doctor from the University of Illinois and is admitted to the Illinois bar association. Rich also brings a wealth of sales and retail banking experience to our mission.

We are always looking for new Cymraeg