About Us

Atumcell provides leading-edge software, hardware, and services to solve complex cyber security problems for companies and government agencies in North America and Europe.



David Williams

Co-Founder | CEO

David Williams’ interest in computers and cyber security risk began at age 16, when as a summer intern at a Veterans Administration hospital he inadvertently crashed the DEC PDP 11/34 minicomputer by programming an infinite loop in MUMPS.

After being confronted by an angry crew of IT staff who ran upstairs from the basement to perform cyber threat management on him, he largely stuck to the business side of the equation. He earned an undergraduate degree in economics from Wesleyan and an MBA from Harvard, then worked in North America, Europe, and Asia with The Boston Consulting Group and MedPharma Partners.

He has decades of experience in healthcare technology, policy, targeted risk assessment, and entrepreneurship and has chaired federal government panels focused on implementing health information technology. David is passionate about harnessing software to reduce drudgery and protect good people from those who would harm them.


Matthew Carr

Co-Founder | Head of Research & Technology

Matthew Carr is an award-winning cyber security researcher and penetration tester who’s often called upon by government agencies and companies of all sizes for cyber threat management. He held senior positions in security at IKEA, IBM and SecureLink, where he built a strong base of real-world experience.

Matthew speaks at leading industry events, lectures on industrial and offensive security, and competes in legal, competitive hacking events (CTFs) against the big boys from Google, Microsoft and Tencent.

In recent years he led innovative and daring cyber security research projects that were featured by the BBC, The Register and Fox News, including print, radio and TV interviews. Matthew achieved top-50 VIP researcher status on open bug bounty and discovered two Zero-Day vulnerabilities, one of which affected national security.



Mikael Totterman

Entrepreneur, technology executive, investor


Trevor McCaw

Technology entrepreneur, commercialization expert


Christy Alvord

Industrial executive, board member