Managed Security Services
DeepSeas provides continuous managed detection and response, exposure management, incident response, threat intelligence, and advisory capabilities that partners can refer or white-label for client engagements.
DeepSeas helps technology partners, MSPs, VARs, brokers, and service providers expand their cybersecurity capabilities with expert-led managed detection, offensive security, advisory, and compliance services. Build stronger client outcomes through flexible collaboration, vendor-agnostic delivery, and complete cyber defense backed by approximately 30 years of experience serving organizations across the United States and worldwide.
Flexible cybersecurity capabilities help partners deliver stronger protection, compliance, and advisory outcomes for their clients.
DeepSeas provides continuous managed detection and response, exposure management, incident response, threat intelligence, and advisory capabilities that partners can refer or white-label for client engagements.
Controlled penetration testing, red team engagements, adversary emulation, and application testing help partners address client security requirements with practical findings and remediation guidance.
Virtual CISO and strategic security advisory services give partner clients access to senior guidance for security strategy, governance, board reporting, acquisitions, and risk decisions.
GRC and compliance readiness services support control development, evidence organization, audit preparation, and ongoing security programs across recognized customer and regulatory requirements.
DeepSeas Complete combines managed detection and response, offensive security, exposure management, threat intelligence, compliance support, and advisory under one coordinated program.
Risk assessments, compromise assessments, vulnerability management, and external attack surface management help partners identify and prioritize the risks affecting client environments.
DeepSeas gives partners access to a broad cyber defense portfolio without requiring them to build every capability internally. MSPs, VARs, brokers, and other technology partners can connect clients with managed detection and response, offensive security, advisory, compliance, and specialized assessment services. Vendor-agnostic delivery supports existing client tools, while expert-led engagement helps partners deliver practical, measurable cybersecurity outcomes.
Help clients strengthen resilience, address security requirements, and move forward with a more complete cybersecurity program.
"DeepSeas is a pleasure to work with. They produce consistent and outstanding results for us and our program, while being thorough, knowledgeable, and easy to work with. We have not had a finding in a certification/re-certification audit in three years across five ISO standards!"
Partners gain practical access to complete cyber defense backed by experienced practitioners and flexible delivery models.
Connect clients with advisory, offensive security, intelligence, detection, response, and compliance expertise through one partner.
Support client environments with existing SIEM, EDR, and CNAPP tools instead of forcing unnecessary technology replacement.
Approximately 30 years of cyber defense experience supports partner engagements across enterprise, mid-market, public-sector, and regulated environments.
Give clients documented evidence of risk reduction, readiness, and operational improvement they can use with leadership and stakeholders.
Experienced cybersecurity practitioners support partner and client success.
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.
DeepSeas works with technology partners, MSPs, VARs, brokers, carriers, and DFIR firms that need additional cybersecurity capabilities for their clients. Partnerships may involve referrals, white-label services, or coordinated delivery, depending on the engagement. The available portfolio includes managed detection and response, offensive security, threat intelligence, advisory, compliance, assessments, and complete cyber defense.
Talk with DeepSeas about extending your cybersecurity capabilities.
Held by DeepSeas specialists.
Recognized as a top 40 MDR provider by Gartner.
Recognized as a Leader and top-five provider.
Awarded for Managed Detection and Response strategy.
Recognition for global MDR strategy.
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