Strategic Security Advisory
DeepSeas advisors help leaders address consequential security decisions, from tool consolidation and operating models to acquisitions, insurer reviews, board expectations, and long-term direction.
Security advisory helps leaders make confident decisions about risk, priorities, technology, and resilience. DeepSeas provides senior counsel shaped around your organization’s business objectives, security program, and operating reality—from consolidating tools and preparing for board discussions to navigating acquisitions, insurer reviews, and long-term strategy. With nearly 30 years of cyber defense experience, DeepSeas turns complex security questions into defensible action.

Strategic guidance, risk insight, program development, and executive-level cybersecurity support tailored to organizational priorities.
DeepSeas advisors help leaders address consequential security decisions, from tool consolidation and operating models to acquisitions, insurer reviews, board expectations, and long-term direction.
Build a cybersecurity program around business goals and actual risk, including assessments, roadmaps, policies, governance, metrics, compliance readiness, and continuous improvement.
Gain CISO-equivalent leadership for security strategy, risk management, governance, executive reporting, cyber insurance guidance, planning, and ongoing program oversight.
Receive a structured evaluation of security strengths, weaknesses, likelihood, impact, and treatment options, supported by stakeholder interviews, risk workshops, and documented priorities.
Prepare for audits and security requirements through gap assessments, control mapping, documentation development, evidence organization, and practical advisory support.
Test response capabilities through tabletop exercises and mock incidents that clarify roles, expose process gaps, and strengthen coordination across technical and business teams.
DeepSeas provides experienced guidance when security decisions carry business, financial, operational, or reputational consequences. Advisors bring practitioner perspective to program direction, technology choices, board communication, acquisitions, divestitures, funding events, insurer reviews, and governance. Engagements can be focused or ongoing, with recommendations grounded in what your team can execute and connected to broader cyber defense capabilities.

Explore how practical, measurable cybersecurity guidance can support stronger programs and more confident executive decisions.
DeepSeas combines strategic perspective with operational cybersecurity experience to make advisory guidance practical.
Nearly 30 years of cyber defense experience informs practical guidance for complex security decisions.
Advisors have operated security programs, connecting recommendations to real implementation and organizational realities.
Strategic advisory connects with offensive security, threat intelligence, MDR, SOC, and GRC capabilities.
DeepSeas focuses on defensible decisions, documented priorities, and measurable cybersecurity outcomes.
Experienced cybersecurity leaders support strategic decisions across complex organizational environments.

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.
Security advisory is expert guidance that helps leaders make informed decisions about cybersecurity risk, priorities, investments, governance, and resilience. Rather than focusing only on a technical deliverable, an advisor helps connect security strategy to business objectives. DeepSeas supports decisions involving security programs, technology, acquisitions, insurer reviews, board discussions, compliance expectations, and the capabilities your organization can realistically operate.
Talk with DeepSeas about your priorities, risks, and next steps.
Recognized in 2023 as a top 40 Managed Detection and Response provider.
Recognized in 2024 as a Leader and top-five provider.
2024 Best Practices Competitive Strategy Leadership Award for MDR.
2024 award for strategy in managed detection and response.
Share your security priorities with DeepSeas and discuss practical advisory support for your organization.
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