About Us


Founded in 2001 by Felix A. Thomas, and starting with a single employee, over 15 years NSSPlus has grown into a cybersecurity powerhouse with over 170 experts on the front line.

What We Offer

What We Offer

In cybersecurity, two things are critical—experience and the ability to adapt. Customers need to know their team has done the job before and has the capabilities to do it right. But new threats and challenges emerge every day, a cybersecurity team must be able to respond. NSSPlus has the people, skills, and talent to evolve with any adversary, supported by a breadth and depth of experience that’s hard to match in the industry:

  • 170+ Cybersecurity Professionals
  • 350 ATOs
  • 100 Physical Reviews
  • 95 Application Risk Assessments
  • The processes and tools to support large A&A programs, including proprietary tools developed in-house
  • The only NSA-certified Red Team outside government and the military
  • Over 9 years’ experience as a Computer Network Defense Service Provider, with multiple DoD CNDSP Tier 2 accreditations; currently prime contractor on two DoD CNDSP contracts.
  • Extensive experience transitioning systems from DIACAP to the Risk Management Framework (RMF) with two DoD agencies
  • Extensive experience managing large GWAC and IDIQ contracts

Executive Team

Our executive team brings value and experience to the cybersecurity market. We are a group of thought leaders not only providing innovation to the market but with a history of success that we stand behind.


Felix A. Thomas

President and CEO

Felix A. Thomas (President, CEO and Founder) brings more than 40 years of experience to NSSPlus. He has been an entrepreneur since 1988, and has extensive technical, management, and consulting experience in Healthcare IT, Information Technology, and Cybersecurity.

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Kemba Thomas

Vice President of HR & Operations

Kemba Thomas brings over 18 years of progressive and professional experience in IT, Human Resources, Facilities Management, Personnel Security, and Continuous Improvement. Under her guidance, NSSPlus successfully obtained ISO 9001:2008 certification and ISO 27001:2013 certification in 2015.

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Kimber Howard

Director of Cybersecurity/Chief Risk Management Framework (RMF) Architect

Kimber Howard brings over 14 years of progressive and professional experience in Project Management, Healthcare IT and Cyber Security program management, Continuous Monitoring, IT Security Engineering, Network Operations and Security Assessments based on the DoD and NIST Standards.

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Mack McHenry

Vice President of Cyber Protection Services

Mack McHenry is a dynamic, results-oriented Cybersecurity and IT professional with over 30 years of IT experience to include providing NOC/SOC support and over 12 years of Cybersecurity support.

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Jennifer Wheeler

Vice President of Information Assurance

Jennifer Wheeler has 18+ years’ experience in Information Technology, over 15 years of which has focused on Cyber Security to include Information Security, Risk Management, System Development Life Cycle, Regulatory Compliance, Risk Assessment and Audit.

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Wayne Clark

Chief Financial Officer

Wayne Clark began his career with a national CPA firm, Touche Ross (now Deloitte Touche). He has held financial management positions at several government contractors.

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Over 80% of NSSPlus Engineers and Analysts have the Certified Information Systems Security Professional (CISSP) certification, a qualifying DoD 8570 certification, and other critical technology certifications.

Join the NSSPlus team

As a world-class provider of cybersecurity services, we’re always looking for exceptional people to join our team. If you’re smart, skilled, and committed to cybersecurity, we want to hear from you.

Here are a few of the benefits of working at NSSPlus:

  • Cutting-edge work in the defense, government, and corporate sectors
  • Culture of training and development, with opportunities to gain new qualifications and certifications
  • Competitive pay and robust benefits program
Cybersecurity Capabilities

NSSPlus Headquarters

1751 Pinnacle Dr.
Suite 600
McLean, VA 22102
Phone: 703-933-7040 Fax: 703-933-7048


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