Managed Detection Response
DeepSeas provides continuous detection, investigation, and response across endpoint, network, cloud, identity, email, SaaS, and operational technology environments.
DeepSeas delivers expert-led cybersecurity for professionals and organizations that need more than disconnected tools. From managed detection and response to penetration testing, risk assessments, compliance support, and strategic advisory, our team helps reduce exposure, improve readiness, and make security a measurable business advantage. Flexible services support enterprise, mid-market, government, education, healthcare, and regulated environments across the US.
Integrated cybersecurity services help professionals identify risk, strengthen defenses, respond to threats, and build resilient security programs.
DeepSeas provides continuous detection, investigation, and response across endpoint, network, cloud, identity, email, SaaS, and operational technology environments.
Assessments identify security strengths, weaknesses, and prioritized risks through stakeholder interviews, asset review, risk workshops, and documented treatment planning.
Ethical hackers conduct controlled attack simulations across networks, applications, cloud environments, physical access points, and social engineering channels.
Continuous exposure management discovers external assets, leaked credentials, vulnerabilities, and attack paths, then prioritizes findings by exploitability and business impact.
GRC services support program design, control development, continuous monitoring, evidence preparation, audit readiness, and ongoing compliance operations.
Senior advisors help leaders set security direction, prioritize investments, prepare for board and insurer reviews, and build practical cybersecurity programs.
DeepSeas connects strategic advisory, offensive security, threat intelligence, managed detection and response, CyberFusion SOC capabilities, and governance, risk, and compliance. Professionals can use existing SIEM, EDR, and CNAPP tools while receiving expert-led monitoring, investigation, testing, and guidance. The result is a coordinated program designed to reduce surprises, improve audit readiness, and make cybersecurity outcomes easier to demonstrate.
DeepSeas supports nearly 1,000 organizations worldwide with measurable, practitioner-led cybersecurity services.
"DeepSeas allows my team to deliver the compliance needed to stay up-to-date with all of our governing bodies. Furthermore, we are more confident that our staff, faculty, and students are better protected with DeepSeas as a cybersecurity partner. Without a doubt, DeepSeas is worth every dollar spent. This is our..."
"DeepSeas data security experts are top notch. They have helped us to improve our cybersecurity posture through risk assessments, penetration testing, and the development of a Data Governance Strategy. They are an invaluable partner."
DeepSeas combines experienced practitioners, integrated capabilities, and flexible support around the security challenges professionals face.
Approximately 30 years of cyber defense experience supports practical guidance and operationally grounded security decisions.
24/7 monitoring, detection, and response help organizations maintain continuous visibility across changing environments.
A six-layer cyber defense stack connects advisory, offensive security, intelligence, response, SOC operations, and GRC.
Bring-your-own-stack support works with existing SIEM, EDR, and CNAPP tools instead of requiring technology replacement.
Experienced cybersecurity leaders and specialists support complex professional security needs.
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 provides managed detection and response, endpoint and network monitoring, penetration testing, compromise assessments, exposure management, vulnerability management, incident response, governance and compliance, strategic security advisory, vCISO support, and security program development. Services can be combined into a broader cyber defense program or selected individually around a specific operational, regulatory, or strategic need.
Talk with DeepSeas about the risks, requirements, and capabilities most important to your organization.
DeepSeas specialists hold ISO Lead Auditor certifications.
Recognition as a top 40 Managed Detection and Response provider by Gartner.
Named a Leader and top-five provider in the 2024 Frost Radar market.
Award recognizing competitive strategy leadership in Managed Detection and Response.
Recognition for strategy in the 2024 Global MDR Best Practices Awards.
Share your security priorities with DeepSeas and explore a practical path forward.
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