[we call ourselves experts for a reason]


GreyCastle Security employs highly-certified and experienced cybersecurity professionals with deep expertise in a broad range of security domains. Our security practitioners maintain advanced knowledge through continuous deployment, education and credentialing. Below is a sampling of our certifications:

  • ISC² Certified Information Systems Security Professional (CISSP)
  • SANS GIAC Security Essentials (GSEC)
  • GIAC Penetration Tester (GPEN)
  • ISACA Certified Information Systems Manager (CISM)
  • ISACA Certified Information Systems Auditor (CISA)
  • ISACA Certified in Risk and Information Systems Control (CRISC)
  • EC Council Certified Ethical Hacker (CEH)
  • EC Council Certified Incident Handler (ECIH)
  • Information Systems Security Professional (INFOSEC)
  • IAPP Certified Information Privacy Professional (CIPP)
  • NSA INFOSEC Assessment Methodology (IAM)
  • NSA INFOSEC Evaluation Methodology (IEM)
  • CompTIA Security+
  • Certified CSF Practitioner (CCSFP)
  • Cisco Certified Security Professional (CCSP)
  • Cisco Certified Network Associate (CCNA)
  • Tenable Certified Network Auditor (TCNA)
  • Microsoft Certified Solutions Expert (MCSE)
  • Information Technology Infrastructure Library (ITIL)
  • Six Sigma Green Belt (CSSGB)
  • ISO/IEC 27001:2013 Lead Auditor (TPECS)
  • GIAC Certified Incident Handler (GCIH)
  • Global Information Assurance Certification (GIAC)
  • Master of Science in Information Assurance (MSIA)
  • Certified Public Accountant (CPA)


GreyCastle Security works closely with cybersecurity-related organizations throughout North America, including Federal and Local Law Enforcement. Below is a sampling of our cybersecurity affiliations:

  • Federal Bureau of Investigations (FBI) - The FBI focuses on threats that challenge the foundations of American society or involve dangers too large or complex for any local or state authority to handle alone. The FBI uses intelligence to protect the nation from threats and to bring to justice those who violate the law.
  • Global Cyber Alliance - The Global Cyber Alliance is the first-of-its-kind transnational, not-for-profit organization dedicated to confronting cyber risk, bringing criminals to justice, and improving our connected-world. Global Cyber Alliance is, first and foremost, a catalyst to bring communities of interest and affiliations together in an environment that sparks innovation with concrete, measurable achievements.
  • Center for Internet Security - The Center for Internet Security, Inc. (CIS) is a 501c3 nonprofit organization focused on enhancing the cyber security readiness and response of public and private sector entities, with a commitment to excellence through collaboration.
  • National Cyber Security Institute (NCI) - The National Cybersecurity Institute at Excelsior College is an academic and research center based in Washington, DC dedicated to assisting government, industry, military, and academic sectors meet the challenges in cybersecurity policy, technology, and education.
  • National Cyber Security Alliance (NCSA) - NCSA's mission is to educate and therefore empower a digital society to use the Internet safely and securely at home, work, and school, protecting the technology individuals use, the networks they connect to, and our shared digital assets.


GreyCastle Security participates in many cybersecurity working groups and organizations, and is an active member of the cybersecurity community. Below is a sampling of the groups in which we serve:

  • The International Information Systems Security Certification Consortium (ISC²) - Headquartered in the United States and with offices in London, Hong Kong and Tokyo, the International Information Systems Security Certification Consortium, Inc., (ISC)²®, is the global, not-for-profit leader in educating and certifying information security professionals throughout their careers.
  • The Information Systems Security Association (ISSA) - ISSA is a not-for-profit international organization of information security professionals and practitioners. Through its membership, ISSA helps security professionals learn about information security issues and trends, which promotes education, collaboration, and leadership to further the information security profession.
  • The Information Systems Audit and Control Association (ISACA) - ISACA is a not-for-profit international organization of information security professionals and practitioners. ISACA membership enhances security professionals' creditability and capability by providing them the information, education, tools, and techniques which promotes collaboration, and leadership to further the information security profession.
  • InfraGard - InfraGard is an information sharing and analysis effort serving the interests and combining the knowledge base of a wide range of members. At its most basic level, InfraGard is a partnership between the Federal Bureau of Investigation and the private sector. InfraGard is an association of businesses, academic institutions, state and local law enforcement agencies, and other participants dedicated to sharing information and intelligence to prevent hostile acts against the United States.
  • The Open Web Application Security Project (OWASP) - OWASP is a 501c3 not-for-profit worldwide charitable organization focused on improving the security of application software by finding and fighting the causes of insecure software. The OWASP application security community is formed by individuals, educators and commercial organizations that work together to create materials, tools, and technologies that support application security.
  • The American Society for Industrial Security (ASIS) - ASIS International is the preeminent organization for security professionals. Founded in 1955, ASIS is dedicated to increasing the effectiveness and productivity of security professionals by developing educational programs and materials that address broad security interests, such as the ASIS Annual Seminar and Exhibits, as well as specific security topics.