Meet the Team


Qualified Or Not?

In today’s challenging and evolving cybersecurity landscape, it’s growing increasingly difficult to differentiate between a truly qualified cyber professional and a “paper tiger” who just looks like one.

The need for exceptional service provided by knowledgeable professionals is what led us to create The Vizius Group – a team of proven engineers who hold a wealth of industry certifications and who truly care about protecting your organization.

About Vizius Greenville
Vizius - Team

Glenn Johnson

CEO/Principal Engineer

Current and Previous Certifications Include:



BS/MS – Information Systems, University of MD. LaSalle University

Areas of Focus:

BC/DR, Quantitative Risk Programs and Analysis, 1/CISO and 1/CIO Functions, Security Strategy and Architecture

David Hyde-Volpe - Vizius - Team

David Hyde-Volpe

CTO/Principal Engineer




BS – Chemistry, Clemson University

Completed PhD coursework in Quantum Theoretical Chemistry, Georgia Institute of Technology

Completed PhD coursework in Statistical Mechanical Theoretical Chemistry, Clemson University

Areas of Focus:

Secure Coding, Statistical Modeling, Penetration Testing, Security Architecture

Vizius - Team Laura Grindley

Laura Grindley

Business Operations Manager




BA – College of William and Mary

Areas of Focus:

Project Management, Accounting, Logistics

David Frazer - Vizius - Team

David Frazer

Principal Engineer


GCIH, CySA+, Linux+, Pentest+, Cloud+, Security+, Splunk Core Power User, CyberAB Registered Practitioner


BA – Spanish and BA – Political Science, University of North Carolina at Greensboro

MS – Information Technology and Management (Concentration in Business Analytics), University of North Carolina at Greensboro

Areas of Focus:

Automation, Security Architecture, Threat Detection

Tumelo Motaung

Tumelo Motaung

Cybersecurity and Digital Marketing Specialist


CompTIA A+, CompTIA LINUX+, CompTIA N+, AWS Solutions Architect – Associate, AWS Developer – Associate, AWS SysOps – Associate, ISC2 CC, Ironscales Technical Pro


Diploma in Information Technology, Richfield Graduate Institute of Technology

Areas of Focus:

Tumelo is a seasoned IT professional with over 10 years of expertise in System Administration, Data Engineering, and Cybersecurity. With a successful history of managing enterprise systems, designing secure cloud architectures, and administering databases, he’s eager to bring his skills and proven track record to contribute to the success of Vizius and our clients.

Max Dinges Vizius - Team

Max Dinges

Principal Engineer




BS Political Science, Methodist University

Areas of Focus:

Cloud Architecture, Automation, On-premise Infrastructure and Architecture, Networking

The Power of Trust

When it comes to partnering with a cybersecurity firm, trust is of paramount importance. Here are several testimonials that illustrate our commitment to earning – and keeping – our clients’ trust.

Your firm is top shelf. The fluff to benefit ratio for your firm is what I love the most. Very little PowerPoint and very impactful recommendations & actions.

I added your firm to my “go to” vendor list for wherever I land.

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CIO of a Large Healthcare Infomatics Company

Collaborating with Vizius feels like having a seamless extension of our own team, particularly when it comes to their expertise in cybersecurity and web application security. The recent penetration test engagement has yielded valuable insights that fuel ongoing improvements in Barchart’s cybersecurity initiatives, ultimately boosting our confidence in our security measures.

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Eero Pikat

We just finished an engagement with Vizius and would highly recommend them. They did a technical risk assessment and pen test across our entire tech stack – their report and feedback was very thorough, and they worked hand in hand with us the whole way through remediation. They’re a great team, and I have peace of mind knowing we’re able to protect our clients and their data. If you have sensitive data you need to protect and are due for this service, I’d highly recommend Vizius!

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Meggie Williams
Founder & CEO

As a part of our ongoing focus on objective quality and value, Vizius helped us with a thorough analysis of our security practice. Both what we practice internally as well as those we provide for our customers. We found their expertise and perspective both valuable and practical and feel confident in recommending their services to our customers and partners.

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Chris Saah
Founder & Chief Customer Officer

We engaged Vizius to satisfy a customer-driven requirement for a third-party cybersecurity assessment. We found them to be highly professional, able to interact efficiently with our senior leadership team, and a source of valuable perspectives on our existing security programs. They took the time to understand our business context rather than re-state ‘one-size-fits-all’ security doctrine. We benefited from their technical depth and expertise and were very satisfied with the deliverables. I’d recommend them to anyone that requires advanced cybersecurity consulting services.

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Ehud Pollack
Vice President, Customer Success

We became aware of Vizius as we were beginning a major software development project. Security of the application and user data was a primary concern. We engaged their team during the design phase of the project. They’ve done a thorough review at each step while not slowing down the pace of development. 

We went on to engage Vizius to manage our Outsourced Security Program where they assess our security controls on an ongoing basis and help us prioritize improvements to align with our industry and business size. Although this is an extensive and long-term project, the Vizius team is guiding us through the process in an engaging, comfortable way. Their expertise and guidance have been invaluable.

Working in the financial industry, we value the trust our customers place in us to manage and protect their sensitive data. I can depend on the Vizius team to know the current threats and what we need to do to defend against them. Relying on their expertise gives us peace of mind and the ability to focus on what we do best.

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Barry Brinson
President & CEO

The team at Vizius Group has a broad understanding of information security and a very unique approach to risk management when compared to other organizations I have worked with in this space. They have worked with us to not only streamline our approach to risk management, but to drastically change the way we communicate these risks to business leaders. They have been professional and proficient throughout the entire process and most importantly are passionate about their craft and information security as a whole. We could not be more pleased!

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Brandon Stephens
Principal IT Security Analyst

We contacted The Vizius Group at short notice after hours upon realizing that data for one of our online applications was at serious risk of being compromised. They immediately responded and convened a meeting with us to determine exactly what the issues were. I was surprised to learn that by the time they got on the call with us the team had already done their research and were able to dialog with us about the risks and the appropriate way forward. Always ready and open to update us on what was happening, Mr. Glenn Johnson went above and beyond to ensure that we understood what was happening. I would without a doubt recommend The Vizius Group to anyone in search of responsive and professional cyber security services.

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Clive Smith
Managing Director

Speak With an Engineer

Imagine if you could talk with one of our Principal Engineers (PEs) about the risks you’re facing – without worrying about getting spammed or being added to a never-ending sales cycle. You can. Just complete the form, and we’ll reach out to arrange a time that’s good for you.