Countering Modern Threats Through Intelligence

Greyline Advisory Group is an intelligence-driven advisory and investigative firm specializing in insider threat, counterintelligence, cybersecurity, and strategic risk services. We help organizations identify, assess, and mitigate complex personnel, cyber, operational, and foreign influence risks before they develop into material security, legal, financial, or reputational events.

Established by experienced intelligence and security professionals, Greyline delivers intelligence-informed solutions that support executive decision-making across corporate, technology, financial, defense, and high-trust environments. Our approach combines structured analytical methodologies, investigative expertise, and operational experience to ensure every assessment, recommendation, and engagement is grounded in defensible analysis and real-world application.

Drawing on expertise in insider threat, counterintelligence, investigations, and organizational risk management, Greyline helps clients strengthen detection capabilities, improve investigative readiness, enhance governance processes, and build resilient security programs. Core service areas include insider threat assessments, investigative advisory support, strategic intelligence analysis, counterintelligence-informed risk assessments, executive intelligence briefings, and specialized training programs designed to improve organizational awareness and operational resilience.

At Greyline, we believe effective security begins with understanding risk, not merely responding to it. Our mission is to provide clients with the insight, context, and critique necessary to make informed decisions in increasingly complex threat environments.