William  Mendez

William Mendez

CISSP, Managing Director of Operations | CyZen

One Liberty Plaza
165 Broadway, Floor 21
New York, NY 10006
p 212.897.6449
f  212.842.7001

William Mendez is the Managing Director of Operations of CyZen, a Friedman LLP Company, with nearly 15 years of experience strategizing and executing innovative cybersecurity solutions for a range of clients spanning multiple industries. 


Will combines a personalized approach with his tactical experience as a former Information System Security Specialist at the Department of Defense to provide expert, result-driven client services. As an innovator, he has developed proprietary government tools to aid warfighters in the tactical environment. This includes helping to devise the Army’s Universal Purge Tool used throughout the Army to sanitize classified hard drives and media. Will provides clients with comprehensive cybersecurity diagnostics that identify vulnerabilities, risks and security gaps. He develops custom-tailored solutions that improve the security and resiliency of clients’ systems and networks.

Will delivers a broad spectrum of services for entities ranging from small and medium-sized businesses to large corporations in the finance, real estate, nonprofit, education and energy sectors. His specialties include network security architectural reviews and vulnerability assessments, with experience leading a task force of technical cybersecurity experts.

Will’s expertise includes:

  • Providing network security architectural reviews and vulnerability assessments
  • Leading a team of technical experts to assess security postures
  • Assisting with the design, development and implementation of security mechanisms for protecting complex information systems
  • Promoting quality assurance industry best-practices in clients’ systems and networks
  • Conducting network architectural security reviews to identify current and future vulnerabilities
  • Performing functional and vulnerability assessments of information assurance products including firewalls and intrusion detection devices

As a thought leader in the cyber security space, Will co-authored a whitepaper on security threats to schools, grades kindergarten through twelfth. He has also led internal client awareness trainings and presented during educational retreats.

  • The International Information System Security Certification Consortium (ISC2)
  • Information Systems Audit and Control Association (ISACA)
  • United States Marine Corps Reserve (July 1988 – December 1995)
  • Spanish