Cybersecurity Redefined

GreyCastle Security is the industry’s leading provider of risk assessment, mitigation, and certification-readiness services. The company was founded to help organizations establish effective cybersecurity programs, minimize the impact of security incidents and simplify compliance. GreyCastle Security has clients throughout North America, specializing in cybersecurity for healthcare, higher education, financial services, technology and critical infrastructure.

GreyCastle Security's revolutionary approach to service delivery completely eliminates an organization's need to recruit and retain new cybersecurity personnel. Our award-winning cybersecurity programs are delivered continuously and managed proactively by certified experts, including risk assessment, awareness, ISO 27001, vulnerability assessment, penetration testing and incident response.

Visit us at for more information, and let GreyCastle Security redefine cybersecurity for you.

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Troy, NY
  • 500 Federal Street Suite 540
    Troy, NY 12180
    United States
other locations
  • 85 Allen Street, Suite 210
    Rochester, NY 14608
    United States