Managed Detection Response
DeepSeas provides continuous detection and response across endpoint, network, cloud, identity, email, SaaS, and operational technology environments, using your existing security tools.
DeepSeas delivers complete cybersecurity protection for organizations seeking stronger visibility, faster response, and measurable risk reduction. From managed detection and response to penetration testing, governance, incident response, and strategic advisory, our expert-led services work across the tools and environments you already use. With nearly 30 years of experience, DeepSeas helps organizations make cybersecurity a strategic advantage.
Integrated cybersecurity services help organizations monitor threats, reduce exposure, test defenses, and strengthen security programs.
DeepSeas provides continuous detection and response across endpoint, network, cloud, identity, email, SaaS, and operational technology environments, using your existing security tools.
Controlled penetration testing, red teaming, and adversary emulation expose attack paths and validate whether security controls can withstand realistic attacker tradecraft.
DeepSeas evaluates controls, processes, assets, and likely attack paths to identify prioritized risks and provide a clear plan for improving cybersecurity outcomes.
Practitioner-led GRC services support program design, control development, evidence preparation, continuous monitoring, and compliance readiness for applicable requirements.
Tabletop exercises, response planning, and incident response support help teams coordinate decisions, investigate activity, contain threats, and recover operations.
Experienced advisors support board reporting, security strategy, program development, vCISO needs, risk decisions, and practical cybersecurity transformation.
DeepSeas combines managed detection and response, offensive security, threat intelligence, advisory, and governance into a coordinated cybersecurity program. Services can work with the SIEM, EDR, and CNAPP tools you already own, helping your team improve visibility without unnecessary technology replacement. Whether you need continuous monitoring, a risk assessment, incident support, or strategic leadership, DeepSeas delivers measurable, customized outcomes.
DeepSeas helps organizations turn cybersecurity complexity into measurable protection, readiness, and risk reduction.
"In cybersecurity we were not looking for a vendor, we were looking for a trusted partner that could push us, challenge us, and ensure we got better at protecting our systems every day. We found that partner with DeepSeas, and they have helped us be far smarter and better than..."
"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!"
DeepSeas brings experienced practitioners and integrated capabilities to complex cybersecurity challenges.
Nearly 30 years of cyber defense experience supports practical guidance and informed security decisions.
24/7 monitoring, detection, and response help organizations address threats continuously rather than periodically.
Bring-your-own-stack support works with established SIEM, EDR, and CNAPP investments without unnecessary replacement.
Documented findings, actions, and progress help leaders demonstrate cybersecurity improvement to boards, auditors, and insurers.
Experienced cybersecurity leaders and practitioners support complex security programs.
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.
In this context, a private security company provides cybersecurity services that help organizations identify, prevent, detect, and respond to digital threats. DeepSeas supports security operations through managed detection and response, risk assessments, penetration testing, incident response, governance, compliance, and strategic advisory. Services can be combined into a broader cyber defense program or selected to address a specific security priority.
Talk with DeepSeas about your priorities, risks, and cybersecurity goals.
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.
ISO Lead Auditor certifications are held by DeepSeas specialists.
Tell DeepSeas about your security priorities and receive guidance on practical next steps.
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