Colleagues / clients / collaborators
References
Perspectives from people I’ve worked with.
Selected excerpts from recommendations received on LinkedIn. Each is dated and attributed to its author.
Current affiliations checked October 24, 2026. Recommendation dates and working relationships are shown separately.
Robert J Mannarino
Independent Board Director / Interim CEO
Boardroom Associates LLC
Colleague on different teams
June 10, 2026
Business judgment
“He understands cybersecurity, AI and technology risks and opportunities in great detail and can synthesize plans and articulate them in business terms.”
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Vik Muiznieks
Assistant Professor, Management Science & Information Systems
Southern New Hampshire University
Same-team colleague
August 12, 2022
CISO leadership
“When I think about who I'd like to have as a CISO, Bill bubbles quickly to the top of a very short list.”
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Peter Brookman
Regional Manager
Zero Networks
Same-team colleague · executive-facing sales
October 22, 2018
Client confidence
“Executives appreciated Bill’s pragmatic approach to problem-solving and his partnership helped me quickly build trust and confidence among our clients/prospects.”
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Allen Firouz
EVP, Chief Innovation Officer
Hekima
Client · healthcare platform transition
May 20, 2007
Client delivery
“…we were able to achieve an intricate design that addressed many of the issues that we intended to solve.”
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Michael Todino
Sector Manager
MIT Lincoln Laboratory
Colleague on different teams
December 13, 2020
People and culture
“The development and well being of his staff is paramount while he embraces a diversity of ideas and welcomes different perspectives towards problem solving.”
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Renault Ross
Founder & President
RNSC Technologies, LLC
Professional colleague · different companies
July 31, 2016
Security and business
“…not only understands just Cybersecurity strategy, controls and best practices but equally understands how it applies to business goals, objectives and imperatives.”
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Steve Riley
Vice President Engineering and Field CTO
Netskope
Colleague on different teams
March 4, 2009
Engagement quality
“Customers have consistently remarked about the high quality of his engagements, both technically and strategically.”
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Mark Serbian
Master Scheduler
Motorola Solutions, Inc.
Project colleague · project manager
May 18, 2011
Dependable execution
“His understanding and handling of shifting management objectives was amazing and I was always able to count on him for timely results.”
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Pamela Foster Brady
Director, Executive Education
LBJ School of Public Affairs, The University of Texas at Austin
MBA classmate · UT Dallas
May 21, 2011
Teamwork in business studies
“He was a high performance team member and delivered excellent work on time.”
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Source links open the received-recommendations section on LinkedIn; sign-in may be required. The author and date identify each original.