The Vanguard Executive Team is comprised of visionaries, entrepreneurs, cybersecurity experts, and seasoned global executives with diverse backgrounds from the United States Military and industry leading Fortune 500 companies, each dedicated to protecting the critical infrastructure globally and committed to a world secured.

Yvonne Shoup
Owner and Chairman

Yvonne Shoup began her career with Vanguard Integrity Professionals in 1992 and has been a key component ever since. Yvonne is a respected and valuable strategic member of the executive team, whose previous role as the Director of Administration; in addition to sitting on the company’s Board of Directors, was responsible for Vanguard’s employee well-being and corporate administration.


As head of Administration at Vanguard, she was the essential link between Vanguard and its employees. In 2022, Yvonne took over as the new Owner and Chairman of Vanguard Integrity Professionals.


Yvonne earned her degree from California State University – Fullerton.

John Connors

John Connors is a recognized expert in multiple cybersecurity disciplines. With over 40 years of experience, he has guided many Vanguard clients through enterprise security challenges; including integration of z/OS Security Server and other enterprise security systems, while assisting in the development of new Vanguard products and solutions.


Prior to joining Vanguard, John proudly served in the United States Air Force for over 24 years, where he grew from a Secure Communication Specialist to Superintendent of Network Operations. After a long, successful career with the military, he finally retired as Chief of Special Projects, responsible for managing a large scale command and control communication facility.


John’s commercial background roles include the CTO at VMDirect, Operations Manager and Chief Architect for a large ASP, and Senior Systems Engineer for a major computer integrator.


John joined Vanguard´s Professional Services Team in April 2002, as a Senior Professional Services Consultant; going on to serve as IT Director, Director of Operations, Vice-President of Technology, before assuming the role of President.

Brian Marshall
Chief Strategist

Brian Marshall joined Vanguard in 2006 serving initially as the Director of Research and Development. During this time Marshall was the primary architect and visionary behind Vanguard Configuration Manager, which is the only automated baseline configuration scanner that enables government agencies and contractors to test and assess their compliance with the National Checklist Program (NCP) guidelines, of the National Institute of Standards and Technology (NIST), for IBM z/OS and RACF.


Prior to joining Vanguard, Marshall served 11 years in software development management at Computer Associates and Innovative DP Designs, Inc., where he led the development of IMS database utilities. He was also a professor of computer science at Solano College in Fairfield, California.


Marshall holds a shared patent on a method of reorganizing IMS databases online. He is also an expert on NIST security standards. Marshall remains an active educator and speaker on numerous z/OS security and compliance topics at RACF User Groups (RUGs), Vanguard’s annual security and compliance conference and other industry conferences.


Marshall holds a BS in computer science and MBA from Sonoma State University.

Nancy Baird

Nancy Baird relocated from Los Angeles and joined Vanguard Integrity Professionals in 2004, with a financial background in public accounting, cash management, financial reporting, cost accounting, acquisitions and audit. Prior to Vanguard she worked in the finance departments of public companies in publishing, auto parts manufacturing, television and film. She has been Corporate Controller and a member of the management team since 2014.


Nancy has a Bachelor of Science degree in Accounting from California Lutheran University.

Roxane Rosberg
Vice President of Customer Relations and Conference

Roxane Rosberg joined Vanguard in 2001 as a key member of the executive team. Ms. Rosberg brought to Vanguard an extensive history of customer relations, and uses that knowledge to bridge the gap between our customers and the executive team.


Rosberg helps solve complex and sensitive business issues along with overseeing internal and external events; and responsible for the highly successful VSC Conference Program.


Rosberg is fluent in German and earned her Bachelors degree from the University of Dayton.

Milt Rosberg
Vice President of Global Sales, Marketing and Business Development

Deeply rooted in the security industry since 1999 with Consul Risk Management (acquired by IBM), Milton Rosberg has worked with Vanguard Integrity Professional as consultant since 2001 along with other industry leading companies that provide solutions for ACF2, Top Secret and RACF. Other areas of expertise include z/OS vulnerably engagements, SIEM connectively, compliance, audit solutions, and system migrations.


A hands-on leader that brings energy and creative thinking to business problem solving, Mr. Rosberg also works closely with CISO professionals within the critical infrastructure producing quick results to complex security business related strategies that improve operational efficiency while meeting the rigors of compliance.