“It would be challenging for any firm to replace Greg and if he is available and you have a need you should jump at the chance.”
JPH
J. Paul Haynes
CEO
Former President & COO, eSentire
via LinkedIn
Chief Information Security Officer | Author
Building AI-ready security programs that boards trust and businesses rely on. 20+ years of enterprise security leadership. Author of Secure AI Enablement: A CISO's Practical Guide to Governing AI at Scale.
Open to leadership and advisory roles
Proven Impact
2,000+
Customers Protected
Across 80 countries
43%
Risk Reduction
Enterprise risk score: 6.0 to 3.43
7-Figure
ACV Wins
Through CISO-to-CISO engagement
<20 min
Incident Response
24x7x365 coverage
Published
Author
Secure AI Enablement (2026)
Featured Speaker & Contributor
Gartner Security Summit
Cybercrime Magazine
Dark Reading
Expert Insights
Leadership Philosophy
Security as a Strategic Enabler
Bridging the gap between technical security operations and business strategy. Elevating the CISO role from risk manager to trusted board-level advisor and innovation partner.
Where Security Meets Innovation
Leading at the Intersection of Cybersecurity & AI
As organizations race to adopt artificial intelligence, the gap between innovation velocity and security governance widens. I operate at that intersection, building the frameworks, policies, and cross-functional operating models that allow enterprises to harness AI's transformative potential without compromising their risk posture.
From chairing AI Governance Committees and authoring ISO 42001-aligned AI management policies, to implementing data protection controls and DLP safeguards for AI systems, my approach ensures that AI enablement and security are not competing priorities but complementary forces driving business value. The CISO who understands AI isn't just protecting the enterprise. They're accelerating it.
AI Governance Frameworks
Chairing enterprise AI Governance Committees with cross-functional operating models aligned to ISO 42001 standards.
AI-Driven Security Operations
Leveraging automation and AI to modernize vulnerability management, threat hunting, and incident response capabilities.
Secure AI Enablement
Implementing data protection controls and DLP safeguards that empower enterprises to adopt AI within their risk tolerance.
The AI-Ready CISO
“Every enterprise will become an AI company. The question is whether your security leader will be the one holding the organization back, or the one clearing the runway for responsible innovation. I choose to be the latter.”
In My Own Words
From the Arena to the Boardroom: My 90-Day Blueprint
How I approach the first 90 days as CISO, from building trust with the board to operationalizing a security strategy that earns its seat at the table.
Enterprise Security Architecture
Building multi-layered defense programs that reduce enterprise risk while enabling business growth, innovation, and secure digital transformation at scale.
Cyber Resilience & Risk Reduction
Developing resilience scoring methods for effective executive communication and maintaining sub-20-minute incident response times across global operations.
Board & Executive Advisory
Trusted advisor to Boards and C-suite leadership, aligning cybersecurity strategy with business objectives, AI innovation roadmaps, and regulatory compliance.
Business Revenue Partnership
Driving seven-figure wins through CISO-to-CISO engagement, serving as executive sponsor for strategic accounts and co-chairing Customer Advisory Boards.
New Book
Secure AI Enablement
A CISO's Practical Guide to Governing AI at Scale. The runtime control architecture AI governance has been missing.
Get the BookThought Leadership
Insights & Industry Voice
Featured across leading cybersecurity publications and podcasts, sharing actionable insights for security leaders navigating today's threat landscape.
AI Autopsy: The LiteLLM Backdoor Shows Why AI Gateways Are Prime Supply Chain Targets
Assured30-60-90 Day Plan for New Security Leaders
eSentireSecret CSO: Greg Crowley, eSentire
eSentireCISO Checklist for Offboarding Security Staff
Dark ReadingSecurity As An Enabler, Not A Blocker
Expert InsightsHow to Increase Cyber Resilience at Your Organization
eSentireWhere to Focus Your Cybersecurity Budget in 2025
eSentireWhat to Do When Your Security Provider Gets Acquired
eSentireIndustry Recognition
Recognized Leader
Honored by industry peers and leading cybersecurity organizations for contributions to the field.
Featured: CISOs to Watch
Recognized among elite cybersecurity leaders for driving innovation in enterprise security programs and executive-level risk governance.
Lacework's 50 CISOs to Watch
Named to the exclusive Modern CISO Network Board Book, recognized for leadership and innovation in enterprise security.
Cybersecurity Pundits: Industry Expert
Listed among top cybersecurity experts to follow in 2024 by Cybersecurity Ventures.
Gartner Security & Risk Summit Speaker
Invited speaker at premier industry conferences including Gartner Security & Risk Summit and LegalSec.
Evanta NY CISO Community Board
Former Governing Board Member of the Evanta New York CISO Community, shaping peer-to-peer executive networking.
What Leaders Say
Trusted by the C-Suite
Recommendations from executives who've worked alongside Greg at the highest levels of the business.
“He approaches cybersecurity not as a gatekeeping function but as a business enabler, consistently finding ways to strengthen security posture while supporting the company’s growth objectives.”
AM
Aran Matier
Chief Legal & Privacy Officer
eSentire
via LinkedIn
Get in Touch
Let's Connect
Interested in discussing cybersecurity strategy, speaking engagements, or leadership opportunities? Reach out below.
Connect professionally
Available For
- Executive Leadership Roles
- Secure AI Enablement Advisory
- Board Advisory Positions
- Speaking Engagements
- Industry Podcasts & Media
- Cybersecurity Consulting
Certifications
CISSPCISM