Virtual CISO Advisory
A virtual CISO provides senior security leadership, risk oversight, governance guidance, executive reporting, cyber insurance advisory, strategic planning, and support for board-level conversations.
DeepSeas provides experienced virtual security and technology leadership for organizations that need strategic direction without adding a full-time executive. Our advisors help clarify cyber risk, strengthen governance, guide technology decisions, support board and executive reporting, and build practical roadmaps aligned with business priorities. With nearly 30 years of cyber defense experience, DeepSeas helps US organizations turn cybersecurity into a strategic advantage.

Strategic advisory and program development help organizations align cybersecurity, technology, governance, and business priorities.
A virtual CISO provides senior security leadership, risk oversight, governance guidance, executive reporting, cyber insurance advisory, strategic planning, and support for board-level conversations.
DeepSeas advisors help leaders evaluate security priorities, consolidate tools, prepare for acquisitions or insurer reviews, and make defensible decisions grounded in operational experience.
Build a practical security program with assessments, maturity roadmaps, policies, governance, decision rights, metrics, compliance readiness, and continuous improvement aligned to organizational risk.
DeepSeas gives organizations access to experienced security leadership without the cost, search time, and retention risk of a full-time executive hire. A virtual vCISO can shape strategy, establish governance, guide budgets, prepare executive reporting, and connect recommendations to operational realities. For organizations also managing technology transformation, vCIO-style guidance helps align IT direction, security priorities, and business objectives through one coordinated advisory relationship.

DeepSeas helps nearly 1,000 organizations worldwide make cybersecurity decisions they can explain, execute, and measure.
Get practical executive guidance connected to real security operations and business priorities.
Nearly 30 years of cyber defense experience informs practical guidance for complex security decisions.
Advice connects to detection, offensive security, threat intelligence, compliance, and response capabilities.
Scale advisory support around your organization’s needs without committing to a full-time executive hire.
Turn technical risk into clear roadmaps, governance decisions, budgets, and board-ready reporting.
Experienced security and technology leaders bring executive perspective to every engagement.

Chief Executive Officer
Lewie Dunsworth serves as Chief Executive Officer of DeepSeas, leading the company's mission to make cybersecurity a strategic advantage for nearly 1,000 organizations worldwide. Under his leadership, DeepSeas has grown into a recognized leader in Managed Detection and Response, earning recognition from Gartner and Frost & Sullivan as a top provider in the industry. Lewie drives the company's vision across its six-layer cyber defense stack, spanning strategic advisory, offensive security, threat intelligence, managed detection and response, the CyberFusion SOC, and governance, risk and compliance. He is committed to ensuring that enterprise, mid-market, government, and education clients receive proactive, measurable, and customized cybersecurity outcomes. Lewie's leadership reflects nearly three decades of industry experience and a steadfast focus on client trust and operational excellence.

CISM, CIPP/E, SANS GCIH, GIAC, HITRUST
Keith Robertson brings 25 years of governance, risk management, and compliance experience to DeepSeas, including prior service as a Fortune 500 Chief Security Officer and Enterprise Risk Officer. He holds an impressive array of certifications, including CISM, CIPP/E, SANS GCIH, GIAC, and HITRUST, reflecting his comprehensive expertise across security management, privacy, incident handling, and healthcare compliance. Keith's executive-level experience gives him a unique perspective on enterprise risk, allowing him to help DeepSeas clients align cybersecurity strategy with broader business objectives. His background in high-stakes corporate security leadership positions him well to guide organizations through complex governance challenges and regulatory requirements. Keith is committed to helping clients build mature, enterprise-grade risk management programs that support long-term security and compliance success across diverse industries.

CISSP, CCSK, Licensed Attorney
Sean Duffy combines 25 years of cybersecurity experience with a unique legal background, holding both CISSP and CCSK certifications as well as a license to practice law. A United States Navy veteran, Sean brings a disciplined, mission-focused approach to his work advising C-suite executives and boards of directors on cybersecurity strategy and risk. His legal expertise allows him to provide clients with a nuanced understanding of regulatory and liability considerations alongside technical security guidance, a combination that is especially valuable for organizations navigating complex compliance landscapes. Sean's extensive advisory experience makes him a trusted voice for senior leadership teams seeking to understand cybersecurity risk in business terms. His military background and legal training reflect the depth and diversity of expertise that defines the DeepSeas team.

CISSP, HITRUST
Matt Lammers is an experienced CISO and IT risk executive who brings both deep technical certification and management consulting experience to DeepSeas. Holding CISSP and HITRUST credentials, Matt has built a career helping organizations strengthen their cybersecurity posture while managing enterprise-level risk. His consulting background equips him with strong skills in translating complex security concepts into actionable business strategies for executive stakeholders. Matt's international perspective, including his status as an Australia permanent resident, gives him valuable insight into global compliance and security considerations that benefit DeepSeas clients operating across borders. He is dedicated to helping organizations build resilient, well-governed cybersecurity programs that align with both operational needs and executive priorities, reinforcing DeepSeas' commitment to customized, outcome-driven security solutions.
A vCIO, or virtual Chief Information Officer, provides executive-level technology leadership on a flexible basis rather than as a traditional full-time hire. The role can include technology strategy, IT governance, transformation planning, budget guidance, vendor oversight, risk alignment, and executive communication. A vCIO helps ensure technology decisions support organizational goals while coordinating with security, compliance, and operational priorities.
Talk with DeepSeas about the leadership and priorities your organization needs.
Recognized as a top 40 Managed Detection and Response provider by Gartner.
Recognized as a Leader and top-five provider in the 2024 Frost Radar Global Managed Detection and Response Market.
Received the 2024 Best Practices Competitive Strategy Leadership Award for Managed Detection and Response.
Received the 2024 Global MDR Best Practices Award for Strategy.
Share your priorities with DeepSeas and discuss practical virtual executive support.
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